The Use of PVA
Surface Preparation
Written by Koos Vermeulen - The production and preparation of paint has gone through many changes the last 10 years. Most of the world's industries are paying the price for bad nature conservation, garbage disposal and maintanance of buildings. Developed countries now relizes the effect of restoration of buildings. Due to lessons learned, we can now protect and preserve new and old buildings by using quality products to extend their lifetime. With modern technology we can also protect old buildings and prolong their life expectancy better than in the past. Vermillian Paint is one of two Manufactures in the World that specialise in the manufacturing of Nano Technology Paint!
 
The use of General Purpose PVA
When using PVA on new walls the following must be kept in mind:
- Wait for at least 5 to 6 days for new plastered walls to dry, before any preparation is done on new walls.
- Test the quality of the cement by rubbing your hand over the surface to see if there is any powder residue. If this is the case make use of Plaster Bond, Bonding Liquid or Distemper Neutraliser.
- Clean the wall with a broom completely free from dust, and wash properly with soap or diluted Jik concentrate to get rid of any dirt and bacteria.
- Allow 12 hours for wall to dry properlythoroughly.
- Add first layer of PVA and allow at least 12 hours to dry before adding second layer.
- Apply final two coats of top coat paint with Double Vinyl. Ensuring 12 hours drying time between each coat
New Plastered Walls
The main purpose of using PVA is to neutralize the alkali that is in the cement mixture. PVA also have good filling qualities and fills hairline cracks. PVA also allows damp to escape and the wall to breath.
The acrylic percentage of the formula also assists when expanding or shrinking during heat or cold. PVA can also absorb damp and release it at the appropriate time. PVA also serves as base coat between the wall and Double Vinyl.
PVA is formulated to stretch the consumer's money and to re-paint a home quickly at a lower cost for re-sale or rental. It is an acrylic PVA that can be used on interior or exterior walls.
Please Note: Do not dilute PVA! The chemical formula is broken and the quality lowered as well as the covering ability. This can result into unnecessary layers that needs to be painted.
New / Old Ceilings
General purpose PVA is the ideal product to apply on to both old and new ceilings. Important to remember is to cover nails and water stains (due to leaking roofs and leaking geysers) with a universal base undercoat Magic Velvet. In bathrooms and kitchens a universal base coat such as Magic Velvet is strongly recommended.
PVA on Enamel/ Smooth Surfaces
Sand surface thoroughly with P40 grit sand paper until all gloss has been removed and the surface has a matt appearance. Take a wet turpentine cloth and clean the entire surface. Apply First coat of undercoat paint with one coat Magic Velvet as a prime coat. Allow to dry for 24 hours. Apply Double Vinyl or Super Satin in two final coats ensuring 12 hours for drying time between each coat. For bathrooms and kitchens paint with 2 coats Magic Velvet ensuring 24 hours drying time between each coat.
Stained Ceilings
Sand the area thoroughly. Wipe clean with wet cloth. Paint stain substrate with Magic Velvet - 2 coats ensuring 24 hours drying time between each layer of paint applied - or until stain disappears. Leave 24 hours between each coat to dry. Paint with Double Vinyl. For bathrooms and kitchens paint with Magic Velvet.
Wet Walls
This can happen due to water leaking in the wall, check for water pipes leaking onto or inside of the wall. To check for water pipes leaking in the wall use a stethoscope. Open the wall with a grinder in a v-shape and repair with a sement and sand mixture. Add Distemper Neutraliser to the mixture as directed. Leave wall to dry 24 hours. Apply Distemper Neutraliser to wall in two coats one horisontaly and the other vertically to ensure maximum penetration. Apply Double Vinyl in two coats with a 12 hour drying time between each coat. Apply two layers of desired final coat in desired colour.
Can also check for the following
Roof Leaks
Corrugated/IBR roofs. Clean roof with a broom Use a household broom with a hosepipe conected to it, conect top and bottom ogf hosepipe with clamps. Remove all dust and loose particles 100%. Apply Galv - Etch, leaving 10 to 15 minutes curing time and then rinsing 100% with water to remove all unwanted substances left after sanding. Leave to dry for 30 minutes. Let dry. Paint with 1 coat Nano-tech Waterproofing Watersealant. While wet place membrane onto the wet paint and remove all air bubbles with hands by forcing it out in a smoothing movement. Apply second coat of Nano-tech Waterproofing over membrane. Let dry for 4 hours. Apply a third layer of Nano-tech waterproofing. Apply first coat of Roofpaint within 24 hours and add a second layer after 12 hours.
Tiled Roofs
Wash tile roof with liquid soap or Galv - Etch and water with a broom as directed above in Roof Leaks. Let dry for 24 hours. Apply two coats of roofpaint, ensuring 12 hours drying time between each layer. If roof was previously painted and paint is peeling, brush roof with a wire brush, removing all loose and flaking paint, before washing the roof. If roof was never painted aply a third coat as directed.
Wall is chalky and peels at bottom only
Scrape all loose paint off the wall. Brush with wire brush. Ensure that all loose paint has been removed. Roughen wall with rough sandpaper P40 and putty knife. Wash wall with high pressure water hose. Allow 12 hours to dry.
Apply 1 coat Distemper Neutraliser to the sides of the wall and 3 coats to the top of the wall where the water surples trough. Paint wall with 3 (three) coats Double Vinyl ensuring 12 hours drying time between each coat. Finish with paint of your choice.
No Dampcoarse
Scrape all loose paint off the wall. Brush with wire brush. Ensure that all loose paint has been removed. Leave wall for 24 hours to dry. Paint 3 coats Distemper Neutraliser. Ensure that each coat changes horisontally and then vertically. Line the trench with plastic lining. Fill trench with loose rocks and boulders. Level top with smaller rocks. Line wall (10cm. high) and ground with same plastic sheet. Pour Concrete at an angle sloping outwards onto the plastic lining, ensuring that the plastic against the wall is totally covered, and that the concrete against the wall is the highest point. Apply three coats of Distemper Neutraliser ensuring 4 hours drying time between each coat.
Leaking Gutters
Sand wall, repair the gutter with a new piece or fix with Nano-Tech waterproofing, or cause of water running down the wall. Repair or replace gutters. Tests the gutters to ensure that the down pipe is at the lowest point of the gutter. Make sure that down pipe is open. Down pipes that is peeling can be treated with Galv - Etch before painting. Apply Magic Velvet as a universal undercoat and two cover coats of Roof Paint.
Flower box next to wall
Remove all the sand in the flower box. Clean the flower box thoroughly on the inside. Isolate the inside of the flower box with 2 coats Distemper Neutraliser. Add a sheet of plastic to the Distemper Neutraliser while it is still wet. Ensure that the flower box has outlet holes at its lowest point. Add sand to box. Replant the flowers. Consider imitation plants if the problem persists. The same process can be followed with flower pots.
Leaking shower wall
Scrape all loose paint off the wall. Brush with wire brush. Ensure that all loose paint has been removed. Roughen wall with rough sandpaper P40 and putty knife. Wash wall with high pressure water hose. If inside wall ,wash with wet cloth with a Bleach mixture. Allow 12 hours to dry.
Apply 1 coat Distemper Neutraliser to the sides of the wall and 3 coats to the top of the wall. Paint wall with 3 (three) coats Double Vinyl. Leave a 12 hour drying time between each coat. Finish with Magic Velvet or High Gloss Enamel. |
