External Rendering
I am currently doing C&G in plastering,
This is how I was shown how to render
note, i have done this formula three times already and no cracking as of yet
Test background for suction, clean wall and dampen with water slightly if needed then
scratch coat.......
Build your screeds as necessary
fill in with the scratch coat and work off wet screeds
5-1 with feb mix and waterproofer and key up..
depending on the weather, leave for about 5 -7 days,
after day 2 and day 4 go back and hose the wall (as drying and curing process is occuring)
Top coat....
dampen down then 5-1 again or 4-1 with feb mix only or 4-1-1 with lime
apply top coat, after half hour rub down with a
plastic float to close in and use bit of gear for any voids and rub in
(not sponge wall as this brings the stones out of the wall)
do figure of eights with the plastic float not circular motions as when
the sun shines on the side of the wall/house you will not see the continous
circular motions
if you were rendering an old cottage, you would use lime
say 5 -1 (5 sand and 1 lime) no cement at all
as lime never fully sets, and the old cottages need to breath
what do you all think of this formula,
cheers
I am currently doing C&G in plastering,
This is how I was shown how to render
note, i have done this formula three times already and no cracking as of yet
Test background for suction, clean wall and dampen with water slightly if needed then
scratch coat.......
Build your screeds as necessary
fill in with the scratch coat and work off wet screeds
5-1 with feb mix and waterproofer and key up..
depending on the weather, leave for about 5 -7 days,
after day 2 and day 4 go back and hose the wall (as drying and curing process is occuring)
Top coat....
dampen down then 5-1 again or 4-1 with feb mix only or 4-1-1 with lime
apply top coat, after half hour rub down with a
plastic float to close in and use bit of gear for any voids and rub in
(not sponge wall as this brings the stones out of the wall)
do figure of eights with the plastic float not circular motions as when
the sun shines on the side of the wall/house you will not see the continous
circular motions
if you were rendering an old cottage, you would use lime
say 5 -1 (5 sand and 1 lime) no cement at all
as lime never fully sets, and the old cottages need to breath
what do you all think of this formula,
cheers