Painting/Protecting house from severe weather

B

Black Sheep

Registered User
Messages
2,372
Has anyone used Hempatex as a sealant/protection against severe weather, wind, rain etc. in a coastal area. Any comments, successes, advice would really be appreciated
 
Just a little thought on paint, etc, as a protector against weather , etc. Does it in any way protect from the elements or is it just decorative?
 
Seems it's primary area of use is for marine installations and shipping containers... What are you looking to paint?
 
It's the gable of the house with chimney on the gable. Chimney has been replaced, roof has been repaired and a couple of years later a tiny leak occasionally appears. It's a windswept/rain swept area. Builder has recommended the sealant. Scaffolding has to go up due to the height/safety. Paint the wall apply the sealant and hope!!!!!!!!!!!
 
Surely apply sealant first!!!!! then paint. I power washed the house and did a coat of exterior paint mixed with PVA BOND. It is a simple standard sealant painters use for exterior jobs. I always mix it with all exterior painting. Very important that the base coat to the plaster has been mixed with sealant so as the paint adheres correctly and stops fungal growth coming through (red discolouring etc).
 
Last edited:
SDMXTWO said:
Surely apply sealant first!!!!! then paint.
Click to expand...

Hempatex is an acrylic resin based sealant paint!

Do not use PVA in exterior paint as it will compromise the finish and durability.
 
Last edited:
Why will PVA compromise the finish etc, I just painted the house (on the coast, westerly winds) for the second time in 15yrs. Why are you choosing Hempatex?

There is also:
Johnstone's Stormshield Pliolite® Based Masonry is a solvent based paint for exterior use on cement rendering, rough cast, brick and concrete. It provides a premium quality, smooth matt finish with excellent adhesion to previously painted and porous surfaces. It is specially designed for use in low temperatures or when rain is imminent.



Key Benefit
 
Last edited:
I would have imagined that salt would be the killer on these exteriors beside the sea. I have spoken to lots of people on Achill Island about this very problem and over the years they've tried all sorts, inc some of the paints, methods, etc, that have been discussed here. None work and that's not a sweeping statement. I've seen what SDMXTWO has written about the 15 years and he's one lucky guy, believe me.
 
SDMXTWO said:
Why will PVA compromise the finish etc,
Click to expand...

PVA is a bonding agent, adding that to a good quality exterior paint will affect the reaction of the binding agents present in the paint. It had its uses many years ago, but modern paint technology has come a long way since then. Some PVA is re-emulsifiable, you really don't want that on an exterior surface.
 
Well in fairness I ran a coat over it some years back, but for me, yes it worked, so much so that I did it again this time (it's all in the mix). If you do not want to paint your house then spray it with a plastikote substance that will last forever or use wood effect plastic cladding as they do in the states and just powerwash instead of a paint job.
 
SDMXTWO said:
Well in fairness I ran a coat over it some years back, but for me, yes it worked, so much so that I did it again this time (it's all in the mix). If you do not want to paint your house then spray it with a plastikote substance that will last forever or use wood effect plastic cladding as they do in the states and just powerwash instead of a paint job.
Click to expand...

Fair enough, it's worked for you, but both paint and PVA manufacturers will tell you not to do this.

Plastkote don't do external masonry products! There is no product that will last forever.
 
You must log in or register to reply here.
Back
Top