Painting Exterior Walls in Winter

[Doug99]

I am planning some work during Dec/Jan involving scaffolding, and taking the opportunity to touch up my exterior render.
In the past I have used Sandtex masonry paint but the specs state not to apply below 8 degrees C.
Is there a suitable paint for lower temperatures?
How critical is the 8 degrees limit?

Cheers All
Doug

 

[Wayners]

​

Johnson's stormshield pliolite can be used to -5 c

 

[opps]

Water based paints cure through a process called coalescence. As the water evaporates off, the product shrinks down and the elements bond together. If the water freezes, the whole process fails.

If you are applying water based emulsion on a sunny wall and the temperature is above 5-8 degrees for 4(?) hours, on the balance of probability, you will be OK, but there are no guarantees.

As @Wayners said, you can use a pilolite paint. They are oil based though.

If you are going to be using exterior oil based gloss paints at that time of year on woodwork, I would recommend that you gloss about 10am and stop about 2 pm. When the early dew comes down it will make the gloss look like eggshell. I once had the misfortune of doing two exterior jobs that ran through the whole of winter (over two consecutive winters). You may also find that any oil based gloss will be a pig to apply. Keep the paint warm and consider using an additive such as Owatrol oil to help it flow.

 

[Doug99]

Water based paints cure through a process called coalescence. As the water evaporates off, the product shrinks down and the elements bond together. If the water freezes, the whole process fails.

If you are applying water based emulsion on a sunny wall and the temperature is above 5-8 degrees for 4(?) hours, on the balance of probability, you will be OK, but there are no guarantees.

As @Wayners said, you can use a pilolite paint. They are oil based though.

If you are going to be using exterior oil based gloss paints at that time of year on woodwork, I would recommend that you gloss about 10am and stop about 2 pm. When the early dew comes down it will make the gloss look like eggshell. I once had the misfortune of doing two exterior jobs that ran through the whole of winter (over two consecutive winters). You may also find that any oil based gloss will be a pig to apply. Keep the paint warm and consider using an additive such as Owatrol oil to help it flow.

I'm painting external pebbledashed render during January so my original post was asking for advice on the most suitable paints for application at low temp. I obviously need to avoid water based paint if it is particularly cold.
Cheers

 

[opps]

I'm painting external pebbledashed render during January so my original post was asking for advice on the most suitable paints for application at low temp. I obviously need to avoid water based paint if it is particularly cold.
Cheers

Fair play.

I hadn't noticed your location. On the balance of probability your January will be far colder than our weather here in London.

I have no idea how big the pebbles are. If you are using a brush (up to 3"), and pliolite I would recommend buying a BrushMate 4. It is a container that you can store the brush in without it going hard. It uses vapours to keep the brush from drying out. Brushes can be left in it for weeks. Saves a lot of time cleaning out brushes.

 

[Doug99]

Fair play.

I hadn't noticed your location. On the balance of probability your January will be far colder than our weather here in London.

I have no idea how big the pebbles are. If you are using a brush (up to 3"), and pliolite I would recommend buying a BrushMate 4. It is a container that you can store the brush in without it going hard. It uses vapours to keep the brush from drying out. Brushes can be left in it for weeks. Saves a lot of time cleaning out brushes.

I hope to finish painting my render within a couple of days so hopefully will not need anything to maintain my roller/brushes.

 

[Doug99]

Pliolite paint is not breathable as it is oil based.
I'm painting my exterior walls in winter which have been previously painted with Sandtex masonry paint (10 yrs ago)
My house has no damp problems so should I be concerned that the new paint is not breathable?
Cheers All.

 

[opps]

Pliolite paint is not breathable as it is oil based.
I'm painting my exterior walls in winter which have been previously painted with Sandtex masonry paint (10 yrs ago)
My house has no damp problems so should I be concerned that the new paint is not breathable?
Cheers All.

I am a decorator, I do not believe that waterbased paints are really breathable.

 

[michealangelo]

I hope to finish painting my render within a couple of days so hopefully will not need anything to maintain my roller/brushes.

Pliolite paint is not breathable as it is oil based.
I'm painting my exterior walls in winter which have been previously painted with Sandtex masonry paint (10 yrs ago)
My house has no damp problems so should I be concerned that the new paint is not breathable?
Cheers All.

Weather tex pliolite paint is breathable

 

[michealangelo]

I am a decorator, I do not believe that waterbased paints are really breathable.

Most masonry water based paints are breathable

Some water based paints , like interior satin are sometimes not breathable at first but they will become so over time through surface breakdown

Buildings need to breathe and the worst things to put on them are these cowboys coatings sprayed on which certainly are NOT breathable and seal in moisture

 

[michealangelo]

Pliolite paint is not breathable as it is oil based.
I'm painting my exterior walls in winter which have been previously painted with Sandtex masonry paint (10 yrs ago)
My house has no damp problems so should I be concerned that the new paint is not breathable?
Cheers All.

Pliolite is sometimes breathable .....look for weather tex ...if you have weather tex ...go ahead...its pliolite , oil based and breathable

To be honest I would stick with water based masonry paint ....smooth unless you have a lot of cracks .....power wash the walls...stabilising any flaking .....then put two coats of slightly thinned sandtex or johnstones or mcphersons or leyland masonry paint

Every 5 litre tub thin with about a pint of water, stir very well

2 coats of this , unless your walls are really tatty....is the way to go

Walls are meant to breath and ordinary trade masonry paintvis the best

 

[Koolpc]

Wait until spring...

 

[michealangelo]

Wait until spring...

Well yes that would be best but you can use pliolite in colder weather if the customer needs it done

 

[Koolpc]

Well yes that would be best but you can use pliolite in colder weather if the customer needs it done

I know but....