Solving your paint problems
Before painting a damaged or problem surface, careful preparation is essential.
Decorating a period house or older property inevitably involves tackling a multitude of problem surfaces - often caused by paint failures created under a range of conditions from damp, mouldy environments through to smoke damage and poor ventilation.
Let's take a look at some of these paint failures, the type of problem surfaces they create and the solutions currently available:
SOLUTION Scrape back the paint to a firm edge and lightly abrade the surface. Apply one coat of primer sealer and follow with one or two finishing coats - ideally microporous.
SOLUTION Remove efflorescence deposits with a course Hessian sacking. Hard shiny efflorescence should be sanded to roughen the surface prior to painting. On new extensions it is advisable not to use conventional solvent based paints such as gloss or eggshell for at least 12 months - allowing the surface to dry out thoroughly.
SOLUTION Completely remove surface coatings by washing with warm water and detergent solutions. Rinse with clean water, taking care to change the rinsing water regularly. If after thorough preparation, the surface is still slightly powdery it may be necessary to seal it with an appropriate primer or plaster sealer prior to finishing.
SOLUTION Treat affected areas with a fungicidal wash. Leave for 24 hours and then wash down to remove residues and allow to dry thoroughly. In severe cases a second treatment may be required. Installing additional ventilation or increasing room temperature can improve conditions within the room affected.
SOLUTION Ensure the source of damp is repaired, and the surface is thoroughly dry. Spot prime the affected area with an alkali-resisting primer before painting. If repainting with water-based paints it is advisable to allow a few days for the oily residues of the primer to disappear, otherwise paint may not adhere to the surface - wash the surface with detergent solution, rinse with clean water and allow to dry thoroughly. Repainting can be more successful using water-based coatings in low-light areas.
PEELING / FLAKING
This is usually caused by moisture beneath the paint film. With conventional emulsion paints, peeling can also occur if applied over dirt, oil, grease or a previously gloss-painted surface.
SOLUTION Scrape back to a firm edge and lightly abrade the surface. Apply one coat of primer sealer and follow with one or two finishing coats.
Classidur a unique interior renovation paint....
From scraping off and washing down through to sealing and undercoating, preparation will take the lion's share of the budget when dealing with the treatment and redecoration of problem surfaces. To keep costs down, an alternative option is to use technically superior renovation paint, such as Classidur, available from Ptarmigan. Requiring minimal preparation, Classidur paint can simply be applied directly over most of the above problem surfaces as well as those caused by nicotine, soot, water, fire damage, exhaust fumes and smoke deposits with no washing down or specific preparation.
Switzerland, Classidur paint features "zero tension". Unlike
a conventional emulsion, when this paint dries it exerts no stress on the
surface. This means it will not flake or peel off - even on the most difficult
surfaces, such as limewash or distemper. And, like limewash and distemper, Classidur paint features a high level of vapour permeability - 88%,
compared to 45% - 50% for conventional emulsions - allowing surfaces to breathe
and dry out after redecoration greatly reducing the risk of paint blistering
Should you wish to discuss how the paint can be used in practice or require further technical advice or assistance please contact Ptarmigan Technology Limited on:
+353 (0)49 433 9490