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Frequently asked questions about exterior painting

Must rust always be removed before painting a metal surface?

Must mould always be removed before painting a surface?

The socle of our house was painted a couple of years ago. A light-coloured, "frost-like" layer developed on the surface, and the paintwork cracked and peeled off in places. What is the problem?
The socle is structurally damaged. If moisture finds its way into the structure and migrates through concrete, efflorescence or white “frost” is deposited on the surface. Unfortunately, the problem cannot be solved by coating. Most likely, water migration is due to insufficient or defective moisture insulation in the subsurface foundations. If you do not want to tackle this problem, the option is to remove the old paintwork completely and treat the socle with lime cement or cement sealer such as Finnseco KS or Finnseco S. These finishes are permeable, allowing water vapour to pass through and they can withstand moisture rising from the foundations without the surface peeling off.

I repainted the internal doors of our home in an outdoor shed using Empire Furniture Paint. It has been several days now, but the paintwork is not yet completely dry. Is there something wrong with the product?

On the last day of my holidays I worked long hours to finish painting my house on time. The paint I used was oil-based Teho. The surfaces that I painted last were clearly duller than the surfaces painted earlier. What went wrong?

How should I repaint my PVC-plastic coated tin roof where the coating is partly peeling off?

I have a new concrete floor in my garage that I would like to paint. How should I do it and with what?

I am building a new log cabin by a lake. I’ve been wondering about surface treatment. When should a new log building be painted and what products should be used for this purpose?

How can I find out what type of paint has been used to paint the timber cladding on my house?

What paint should I use to paint the floor and handrail of a new terrace made of pressure-impregnated timber?

What is the best weather for painting outdoors?

The roof of our house was rebuilt and covered with zinc-coated metal sheeting. When can I paint it?

Why have the colour of the external walls of my house changed over the years?