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Removing Wall paper from Plaster walls

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Removing Wall paper from Plaster walls

 

1. Cover the Floor

In my youthful exuberance, I forgot to remove the baseboard and cover the tile floor with newspaper. I later learned that was a big mistake. Both the baseboard and tile had intricate carvings that quickly became encased in bits of old wallpaper. I didn’t think that the old wallpaper adhesive would be so sticky once it was scraped off of the walls. I was so wrong. After scraping down the walls, I had to scrape the baseboards and the floor as well. It took me days to clean up the mess.

2. Vinegar Helps

The second thing that I learned was that vinegar is for more than just pickling eggs and cleaning coffee makers. It also does a heck of a job removing wallpaper and grandma’s homemade joint compound. In addition, it stinks really badly when used in a wallpaper steamer. I sprayed the walls with a 50-50 water vinegar mixture and let it sit like that for a few minutes. Then I put the same mixture into the electric wallpaper steamer that I had purchased from my local home improvement store. It seemed to work better than just plain water. Years later I learned that a mixture of water and fabric softener also helps to remove old wallpaper and it smells so much better.

3. Score the Wallpaper

The third thing that I learned was that scoring the layers of wallpaper before applying the vinegar and water mixture helps to make the task easier. At the time I was afraid to use a perforation tool, so I used an X-Acto knife instead. Even with the knife’s short blade you still have to be careful of how deep you cut into the paper. If you cut too deep you could gouge the walls.

4. Look for a Scraper with Rounded Edges

The fourth thing that I learned about removing wallpaper from plaster walls was to use a wide joint compound knife for the scraping process. I’d suggest that you also look for a knife blade with slightly rounded corners so you don’t accidentally break the plaster with the blade’s sharp edges. Personally, I found that the hardest places to scrape without doing damage to the plaster was around the windows and in the corners. I couldn’t find a blade with rounded edges, so I improvised. I covered the sharp corners of the blade with a bit of duct tape. It helped somewhat.

5. Finish with Plain Water

The fifth thing that I learned while removing wallpaper was that just because the paper is gone, it doesn’t mean that the adhesive has been removed as well. Once the wallpaper was removed, I let the wall dry. After it dried I ran my hands over the walls and realized that there were still traces of adhesive in spots. As such, I had to wipe down the walls with plain water and a sponge. That final wipe down with the sponge removed whatever adhesive was left.

House painter and decorator

House painter and decorator

A house painter and decorator is a tradesman responsible for the painting and decorating of buildings, and is also known as a decorator or house painter.[1][2] The purpose of painting is to improve the aesthetic of a building and to protect it from damage by water, rust, corrosion, insects and mold.

In England, little is known of the trade and its structures before the late 13th century, at which point guilds began to form, amongst them the Painters Company and the Stainers Company. These two guilds eventually merged with the consent of the Lord Mayor of the City of London in 1502, forming the Worshipful Company of Painter-Stainers. The guild standardised the craft and acted as a protector of the trade secrets. In 1599, the guild asked Parliament for protection, which was eventually granted in a bill of 1606, which granted the trade protection from outside competition such as plasterers.[2]

The Act legislated for a sevens year apprenticeship, and also barred plasterers from painting, unless apprenticed to a painter, with the penalty for such painting being a fine of £5. The Act also enshrined a maximum daily fee of 16 old pence for their labour.[2]

A painter painting a room in a house

Enforcement of this Act by the Painter-Stainers Company was sought up until the early 19th century, with master painters gathering irregularly to decide the fees that a journeyman could charge, and also instigating an early version of a job centre in 1769, advertising in the London newspapers a “house of call” system to advertise for journeymen and also for journeymen to advertise for work. The guild’s power in setting the fee a journeyman could charge was eventually overturned by law in 1827, and the period after this saw the guild’s power diminish, along with that of the other guilds; the guilds were superseded by trade unions, with the Operative United Painters’ Union forming sometime around 1831.[2]

In 1894, a national association formed, recreating itself in 1918 as the National Federation of Master Painters and Decorators of England and Wales, then changing its name once again to the British Decorators Association before merging, in 2002, with the Painting & Decorating Federation to form the Painting & Decorating Association. The Construction Industry Joint Council, a body formed of both unions and business organizations, today has responsibility for the setting of pay levels.[2]

[edit] Tools of the trade

Grille peinture.jpg

The modern composition of paints results in latex formulations, water-soluble paints derived from petroleum or polymer components, being widely used for exterior as well as interior. That reduces post painting cleanup, and reduces the smells associated with oil-based paints, which may be composed of either natural, traditional oils or modern, synthetic ones. Computerized paint scanners formulate new paints to match the often faded colour of existing paints. Many chain stores offer colour matching service.

Modern paints are available in various specialized formulations that can be fade resistant, chip resistant, odor free, antibiotic to resist mould and fungi growth, etc.

Modern paints also are available in Low to no (zero) VOC’s. (Volitile Organic Compounds) These paints are safer for the environment and have little or no odor.

For surfaces where a very smooth surface is desired, most retailers carry inexpensive chemicals that can be added to paints to better make the paint flow or lay flat.[3] Such additives are preferable to thinning paint, which can change some of the paint’s characteristics.

For the layman, the most confusing element is primer and priming surfaces. For surfaces such as wood, paint alone is too thick and will be on the surface, but not adhere well, resulting in flaking. Primer is a thin paint solution, or even a specialized liquid colour coordinated to support the finish coat, which penetrates into the pores of wood, and allows the finish coat to adhere to the underlying primer.

Priming also results in less paint being needed. For unpainted wood, most laymen expect to apply two coats of paint. However, one coat of inexpensive primer and then a finish coat is much less expensive. This, however, does not protect the painted surface as well. Primer, when it dries, has a flat finish and it’s purpose is for adhesion. Top coats, however, are to seal and protect the surface whether it be wood, metal, drywalls, etc.

For metal surfaces, primer may involve special characteristics to resist corrosion, prevent impact chipping or improve adhesion of the finish coat.

Especially for problem paint jobs, such as new work, fungal presence or peeling paint, most professional paint retailers offer free consulting services. When their instructions and materials are used, guarantees of 5 years to lifetime are available as to adhesion, water proofing, etc. of the finished paint job.

For professional painters, the majority of their time is spent in preparation for paint application, not in painting per se. Cleaning and sanding surfaces, scraping loose and failing paint, taping and applying paper or plastic to surfaces not to be painted typically involve 50% or more of the painter’s total time budget.

Although the brush and the fabric roller were the tools most readily associated with the painter, foam brushes are now commonly used for precise work requiring a straight line. Foam brushes can also be used to create a smoother surface using less paint that dries more quickly than brush applications.[4] Like fabric rollers, foam rollers can also create patterns in the painted surface. Foam rollers are available in a variety of professional materials for high-quality applications. [5] Although used in a variety of applications, the foam roller is commonly used during the painting of doors to produce an extremely smooth finish.

Recent advances in manufacture have led to a standardization of brushes, with many older types of brushes falling from fashion.[2] The spray gun is one of the latest tools in the painter’s arsenal. It is powered by an electric, pneumatic or fuel powered motor which pumps paint through a hose into a gun which atomizes the paint to a fine spray. With the airless spray gun it is possible to paint extremely large areas of surface in a short time.

However, sprayed paint when dry can display unsightly patterns if the spraying application does not result in an even distribution of paint. There is also the problem of overspray. Overspray is when the surrounding surfaces are sprayed with a haze of paint because they were not masked properly.

The ground brush, also known as a pound brush, was a round or elliptical brush bound by wire, cord or metal. They were generally heavy to use, and required considerable usage to break them in. These brushes were predominantly used in the days before modern paint manufacturing techniques; hand-mixed paints requiring more working to create the finish. These brushes still have use in applying primer, as they are useful in working the primer into the grain of the wood. Pound brushes required an even breaking in to create even bevel on both sides of the brush, minimising the formation of a point which would render the brush useless.[2] Sash tools were smaller brushes, similar to a ground brush, and used mainly for cutting in sash or glazing bars found on windows.

Sash tools and ground brushes generally required bridling before use, and a painter’s efficiency in this skill was generally used as a guide to their overall ability. Both these brushes have largely been superseded by the modern varnish brush. Varnish brushes are the most common flat brushes available today and are used for painting as well as varnishing. Brushes intended for varnishing typically have a bevelled edge.[2]

Distemper brushes, used for applying distemper, an early form of whitewash, were best made of pure bristle and bound by copper bands to prevent rust damage. Styles differed across the world, with flat nailed brushes popular in Northern England, a two knot brush (a brush with two ovular heads) popular in Southern England, and three knot brushes or flat head brushes preferred elsewhere. In the United States distemper brushes were known as calcimine, kalsomine or calsomine brushes, each term being the U.S. variant of whitewash.[2]

Fitches are smaller brushes, either ovular or flat and one inch wide, that are used in fine work such as to pick out the detail on a painted moulding. Stipplers come in various shapes and sizes and are used to apply paint with a stippled effect. A duster or jamb brush was used to dust the area to be painted before work commenced. Stencil brushes, similar in style to a shaving brush, were used for the purpose of stencilling walls or in the creation of hand-made wallpapers.[2]

Brushes are best stored in a purpose made brush keeper, a box on which a wire could be suspended. The wire would be threaded through the hole in a brush’s handle so as to suspend the brush in a cleaning solution without allowing the brush to sit on the bottom of the container and thus cause spreading of the bristles. The solution would also prevent hardening of the brushes and oxidization. These were generally rectangular and stored several brushes. A lid would enclose the brushes and keep them free from dust.[2]

If brushes are cleaned after use, they can last for years. Since most modern exterior and interior paints are latex based, cleaning the brushes after use with hot soapy water and a toothbrush can remove all traces of paint. Oil based paints are normally cleaned with a natural or synthetic solvent such as mineral spirits, again using a toothbrush to remove all traces of paint. Metal “combs” are used to penetrate into the bristles of a brush to remove drying paint.

Although paints are now available in no-drip containers to pour paint into trays for roller application, most paints are sold in metal gallon or quart cans. For large jobs, paints come in 5-gallon containers.

For metal cans, a large diameter nail or punch is used to make drain holes in the lip of the can. The holes allow paint to return into the can. The lid can then be reattached correctly and removed later. Without the drain holes paint will accumulate in the lip, and act as an adhesive preventing the lid from being easily removed later. Closing a lid with paint in the lip can also result in paint travelling 15-feet or more horizontally.

The air in partly filled paint cans forms over time a dried surface film. To prevent development of film, prior to closing a latex paint container add a small amount of distilled (or tap) water that will remain on the top and prevent drying. For oil based paints use the solvent recommended for brush cleaning. When the container is reopened, stir the water/solvent into the paint before using.

Drop cloths, brown painter’s paper, dust-sheets, paint sheets, paint tarpaulins or plastic protection films are used to protect nearby surfaces that are not being painted.

Masking tape can be used to define the line between the painted and unpainted surface, as well as to hold protection materials in place. Masking tape is available in several categories. The classic tape is a high adhesive. However it can damage the underlying surface when removed, and the longer it’s in place the greater the risk of damage.

Modern delay removal tape prevents damaging the taped surface.[6] “Delicate” tape has about 40% the adhesion of traditional tape, and can remain on a surface for up to 30-days without creating damage.[7]

The less adhesive tapes should be used especially when tape is applied to new work. Depending on the paint composition, “dry” paint may still be soft and easily damaged for 30-days or more.

Some modern house painters in the US, Canada and Australia have adopted colour visualization computer software, developed by companies such as Autech Software & Design, as an additional tool to help demonstrate to customers how their home would look after it is painted. House painters can use a digital photo outputted by this software to show possible colour schemes on the client’s home exterior or room walls to help with their colour selection.

[edit] Activities of the trade

Historically, the painter was responsible for the mixing of the paint; keeping a ready supply of pigments, oils, thinners and driers. The painter would use his experience to determine a suitable mixture depending on the nature of the job. In modern times, the painter is primarily responsible for preparation of the surface to be painted, such as patching holes in drywall, using masking tape and other protection on surfaces not to be painted, applying the paint and then cleaning up.[2]

Larger firms operating within the trade were generally capable of performing many painting or decoration services, from sign writing, to the gilding of objects or the finishing or refinishing of furniture.[2]

More recently, professional painters are responsible for all preparation prior to painting. All scraping, sanding, wallpaper removal, caulking, drywall or wood repair, patching, stain removal, filling nail holes or any defects with plaster or putty, cleaning, taping, preparation and priming are considered to be done by the professional contracted painter.

Before repainting, surfaces are usually cleaned with sugar soap (in Commonwealth countries) which usually contains sodium carbonate, sodium phosphate, and sometimes sodium silicate as an abrasive, though formulations vary. In the U.S.A. a similar compound known as TSP is used but some modern formulations do not contain phosphates due to environmental concerns.

Professional painters need to have keen knowledge of tools of the trade, including sanders, scrapers, paint sprayers, brushes, paint rollers, ladders and scaffolding, in addition to just the paint in order to correctly complete work. Much preparation needs to be considered before simply applying paint. For instance, taping and dropcloth techniques, sizes of brushes or rollers, material types or dimensions of rollers or brushes (there are different sizes or types of brushes and rollers for different paints), amount of paint, number of paint coats, amount of primer, types of primers and paints, certain grits and cuts of sandpaper, trim cutting (the act of painting with a brush on the outline of baseboard, mouldings and other trim work), wallpaper removal, and nail-hole filling techniques. Today many painters are attempting to break into the field of faux painting, allowing them more creativity and access to a higher end customer base.

Wax Bleed

Wax Bleed

Wax Bleed

Stains that come from waxy substance in the reconstituted wood
products used to make hardboard siding. When the substrate is painted,
these staining substances bleed through the paint; they can even bleed
through some ordinary primers, possibly causing dirt pickup, mildew
and/or poor paint adhesion (see Dirt Pickup and Mildew).

Possible Causes Wax Bleed

Failure to apply a proper primer to hardboard before applying the top coat.
Allowing hardboard siding to weather before being painted.

Solution Wax Bleed

To treat or prevent, apply a quality exterior acrylic latex primer; follow with a coat of high quality exterior
acrylic latex paint. The American Hardboard Association recommends two coat of top quality acrylic
exterior house paint for best results. Some hardboard grades have adequate factory primer and need only a
quality paint applied. Low quality, highly pigmented flat paints are more prone to wax bleed than are higher
quality paints.

Vinyl Siding Warp

Vinyl Siding Warp

Vinyl Siding Warp

Warping or buckling of vinyl siding panels that have been repainted.

Possible Causes Vinyl Siding Warp
Most likely cause is that vinyl siding was painted with a darker color
paint than the original color. Dark paint tends to absorb the heat of the
sun, transferring it to the substrate. When vinyl siding expands
dramatically, it is not able to contract to its original dimensions.

Solution Vinyl Siding Warp
Paint vinyl siding in a shade no darker than the original. Whites, off-whites, pastels and other very light
colors are good choices. Top quality acrylic latex paint is the best type of paint to use on vinyl siding,
because the superior flexibility of the paint film enables it to withstand the stress of expansion and
contraction cycles cause by outdoor temperature changes.
Siding that has warped or buckled should be assessed by a siding or home repaint contractor to
determine the best remedy. The siding may have to be replaced.

Tannin Staining Paint

Tannin Staining Paint

Tannin Staining

Brownish or tan discoloration on the paint surface due to
migration of tannins from the substrate through the paint
film. Typically occurs on “staining woods,” such as
redwood, cedar and mahogany, or over painted knots in
certain other wood species.

Possible Causes Tannin Staining Paint
Failure to adequately prime and seal the surface before applying the paint.
Use of a primer that is not sufficiently stain-resistant.
Excess moisture escaping through the exterior walls, which can carry the stain to the
paint surface.

Solution Tannin Staining Paint
Correct any possible sources of excess moisture (see Efflorescence and Mottling). After
thoroughly cleaning the surface, apply a high quality stain-resistant oil-based or acrylic latex
primer. Oil-based stain-resistant primers are the best type to use on severely staining
boards. In extreme cases, a second coat of primer can be applied after the first has died
thoroughly. Finish with a top quality latex paint.

Surfactant Leaching

Surfactant Paint Leaching

Surfactant Leaching

Concentration of water-soluble ingredients on latex paint, creating a
blotchy, sometimes glossy appearance, often with a tan or brownish
cast. More likely with tinted paints than with white or factory-colored
paints.

Possible Causes Surfactant Leaching
Painting in cool, humid conditions or just before they occur. The longer
drying time allows the paint’s water-soluble ingredients – which would normally evaporate, or be leached out
by rain or dew – to rise to the surface before paint thoroughly dries.
Mist, dew or other moisture drying on the painted surface shortly after it has dried.

Solution Surfactant Leaching
Avoid painting in the late afternoon if cool, damp conditions are expected in the evening or overnight. If
the problem occurs in the first day or so after the paint is applied, the water-soluble material can
sometimes be rinsed off rather easily. Fortunately, even more stubborn cases will generally weather off in a
month or so. Sufactant leaching should not affect the ultimate

Poor Galvanized Metal Adhesion

Poor Galvanized Metal Adhesion

Poor Galvanized Metal
Adhesion

Paint that has lost its adhesion to a galvanized metal
substrate.

Possible Causes
Improper surface preparation, such as inadequate rust
removal.
Failure to apply a primer before application of an oil-based or vinyl latex paint.
Failure to sand baked-on enamel finishes or glossy surfaces before painting.

Solution
Any rust on the metal should be removed with a wire brush; then, an acrylic latex
corrosion-inhibitive primer should be applied (one coat is usually sufficient). Previously
painted galvanized metal that is completely rust-free can be painted without applying a
primer. A latex metal primer should be applied to unpainted galvanized metal, followed by a
top quality exterior acrylic latex paint.

Poor Alkali Resistence

Poor Alkali Resistence

Poor Alkali Resistence

Color loss and overall deterioration of paint film on fresh masonry.

Possible Causes
Oil-based paint or vinyl acrylic latex paint was applied to new masonry
that has not cured for a full year. Fresh masonry is likely to contain lime
which is very alkaline. Until the lime has a chance to react with carbon
dioxide from the air, the alkalinity of the masonry remains so high that it
can attack the integrity of the paint film.

Solution
Allow masonry surfaces to cure for at least 30 days, and ideally for a full year, before painting. If this is
not possible, the painter should apply a quality, alkali-resistance sealer or latex primer, followed by a top
quality 100 percent acrylic latex exterior paint. The acr

Poor Paint Gloss Retention

Poor Paint Gloss Retention

Poor Paint Gloss Retention

Deterioration of the paint film, resulting in excessive or rapid loss of
luster of the top coat.

Possible Causes
Use of an interior paint outdoors.
Use of a lower quality paint.
Use of a gloss alkyd or oil-based paint in areas of direct sunlight.

Solution
Direct sunshine can degrade the binder and pigment of a paint, causing it to chalk and lose its gloss.
While all types of paint will lose some degree of luster over time, lower quality paints will generally lose
gloss much earlier than better grades. The binder in top quality acrylic latex paints is especially resistance
to UV radiation, while oil and alkyd binders actually absorb the radiation, causing the binders to break
down. Surface preparation for a coating showing poor gloss retention should be similar to that used for
chalking surfaces (see Chalking).

Peeling Paint

Peeling Paint

Peeling

Loss of paint due to poor adhesion. Where there is a primer and top
coat, or multiple coats of paint, peeling may involve some or all coats.

Possible Causes
Seepage of moisture through uncaulked joints, worn caulk or leaks in
roof or walls.
Excess moisture escaping through the exterior walls (more likely if
paint is oil-based).
Inadequate surface preparation.
Use of lower quality paint.
Applying an oil-based paint over a wet surface.
Earlier blistering of paint (see Blistering).

Solution
Try to identify and eliminate source of moisture. Prepare surface by removing all loose paint with scraper
or stiff wire brush, sand rough edges, and apply appropriate primer. Repaint with a top quality acrylic latex
exterior paint for best adhesion and water resistance.

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