Overall render thickness
|
|
3/4"- 1"** |
1"-1 3/8" |
up to 1 9/16" |
On well keyed surfaces.
(raking joints not necessary)
|
|
|
(for thickness above 1 9/16"
please consult us.) |
1st coat |
3/8"-5/8"
|
3/8"- 5/8"
|
|
NHL 5 or NHL 3.5 @ 1: 1.5
Sands: well graded #4 down to #200 mesh |
|
|
|
Trowel off high spots and leave 3-4 days as sprayed
to provide good key. |
2nd coat |
3/16"- 5/8" |
3/8"- 5/8" |
3/8"- 5/8" |
NHL 5 @ 1:2.5 or NHL 3.5 @ 1:2
Sands: well graded #6 mesh down to #200
This can be the finishing coat for a 3/4"- 1" render. If
a smooth finish is required apply a 3rd coat as below.
Level using a straight edge and key with criss-cross patterns. |
Leave about 7 days depending on weather conditions
and the plasterer's judgment. |
3rd coat (finishing) |
1/8"- 3/16
Smooth finishes only
otherwise use 2nd coat
as finishing coat.
|
3/16"- 5/16" |
3/16"- 5/8" |
NHL 3.5 @ 1: 2.5 or NHL 2 @ 1:2
Sands: depending on the finish required.
Finer sands for wooden float or smooth finishes (#8 or finer) can
be used. In these cases the thickness should not be over 3/16".
|
** This thickness can be achieved in one coat
(several passes) with suitable aggregates. Please consult us. |