House needs repainting after less than 3 years

Hyphae

PVA and Paint: Don't do it!

Its fine till moisture gets through the paint...then the PVA reactivates and Paint starts to flake.

Professionals should know better! It used to be used (or the animal glue equiv) when lime washes/paints were used in VICTORIAN times. I guess the habit has been passed down and noone thought to take account of major changes in paint technology...

diable

Move and buy a freehold house, it'll be cheaper in the long term.

DVardysShadow

anotherbaldrick wrote: »

Probably the wood has become "De-natured" this is because it has been neglected in the past which has caused the wood to be exposed to sun and rain and loose its texture and become very absorbent. The result of this is that fresh paint, the body of the paint and the bonding agents are just absorbed into the wood and you are left with a flaky film sitting on the surface.
The solution is to prime the wood before painting using a watered down solution of PVA adhesive. Two coats, the first watered down 20% PVA 80% water ,allow a day to dry then second coat diluted 50-50. when dry undercoat and top coat and you will find the paint will bond now to the wood.

Any good decorator would know all this.

PVA and paint are never a good combo!

aboard_epsilon

nickj wrote: »

i've been a painter for thirty years and have worked with loads of other painters in my time and none has ever used pva glue on wood as a primer , i always use the reccommended primers as per manufacturers instructions , unless of course you are suggesting that you know better than them
obviously wood does get to the stage where it is beyond painting ,

Not on the outside of a house ..but ive seen it used on mdf on tv DIY programs, because it's so porous, that you would need umpteen coats of paint....not at all sure what would happen a few years later .


all the best.markj

nickj_2

aboard_epsilon wrote: »

Not on the outside of a house ..but ive seen it used on mdf on tv DIY programs, because it's so porous, that you would need umpteen coats of paint....not at all sure what would happen a few years later .


all the best.markj

if anyone takes any notice of diy shows then they deserve all the problems that come with their methods ,