Warm Pitched Roof - Unventilated |
| Recommended for new build or re-roofing |
| (Tiles, Tile battens, Breather membrane, Counter battens,
Insulation above rafters, Cavity, 12.5mm Plasterboard) |
|
|
|
U-Value 0.20 |
MANUFACTURER |
PRODUCT |
LAMBDA
λ |
Thickness MM |
CELOTEX |
EXTRA-R ™ XR3000 |
0.023 |
100 |
DOW |
ROOFMATE RL-X |
0.029 |
120 |
KINGSPAN |
THERMAPITCH TP10 ZERO ODP |
0.023 |
100 |
KINGSPAN |
KOOLTHERM K7 ZERO ODP |
0.022 |
100 |
Two Layer Insulation |
Warm Pitched Roof - Unventilated |
| Recommended for new build or re-roofing |
| (Tiles - Tile battens, Breather membrane, Counter battens, Insulation above rafters,
Insulation between rafters, Cavity 12.5mm plasterboard @ 600mm centres) |
|
|
|
|
U-Value 0.20 |
MANUFACTURER |
PRODUCT |
CONSTRUCTION |
LAMBDA
λ |
Thickness MM |
KINGSPAN |
THERMAPITCH TP10 |
OVER RAFTERS |
0.023 |
|
|
ZERO ODP |
BETWEEN RAFTERS |
|
|
KINGSPAN |
KOOLTHERM K7 |
OVER RAFTERS |
0.021 |
|
|
PITCHED ROOFBOARD |
BETWEEN RAFTERS |
|
|
CELOTEX |
TUFF-R ™ ZERO |
OVER RAFTERS |
0.023 |
|
|
GA3000Z |
BETWEEN RAFTERS |
|
|
NB: Condensation - How to avoid. The thickest layer of insulation must be the insulation layer over the rafters.
Warm Pitched Roof - Rebated Insulation |
| Recommended for new build or re-roofing |
| (Tiles, Tile battens, Breather membrane, Counter battens, Insulation above timber,
Insulation between timber, 12.5mm Plasterboard @600mm centres) |
|
|
|
U-Value 0.20 |
U-Value 0.16 |
MANUFACTURER |
PRODUCT |
LAMBDA
λ |
Thickness MM |
Thickness MM |
DOW |
ROOFMATE PR-X
(50mm Over Rafters) |
0.029 |
160 |
220 |
VENCEL RESIL |
JABROOF PANEL
(50mm Over Rafters) |
0.036 |
190 |
250 |
Integral Insulation |
| Recommended for new build |
| (Tiles, Tile battens, Counter battens, Roof element,
12.5mm Plasterboard) |
|
|
|
U-Value 0.25 |
U-Value 0.20 |
U-Value 0.16 |
MANUFACTURER |
PRODUCT |
LAMBDA
λ |
Thickness MM |
Thickness MM |
Thickness MM |
VENCEL RESIL |
JABROOF PANEL
SUPPORT SYSTEM |
0.031 |
131 |
157 |
200 |
Cold Roof with Insulation on the Horizontal between Joists |
(Tiles, Tile battens, Felt, Loft space, Insulation between & above timber joists 12.5mm Plasterboard - based on
100mm joists @400mm centres) |
|
|
|
U-Value 0.16 |
U-Value 0.13 |
MANUFACTURER |
PRODUCT |
LAMBDA
λ |
Thickness MM |
Thickness MM |
BRITISH GYPSUM-ISOVER |
ISOWOOL GP1000/SPACESAVER |
0.043 |
100 + 170 |
- |
BRITISH GYPSUM-ISOVER |
ISOWOOL SPACESAVER PLUS |
0.040 |
100 + 150 |
100 + 200 |
CELOTEX |
EXTRA-R ™ XR3000 |
0.023 |
100 |
100 |
|
TUFF-R ™ ZERO GA3000Z |
0.023 |
+ 60 |
+90 |
KINGSPAN |
THERMAPITCH TP10 ZERO ODP |
0.023 |
100 + 60 |
100 + 90 |
KNAUF INSULATION |
CROWN LOFT ROLL |
0.044 |
100 + 170 |
- |
KNAUF INSULATION |
CROWN LOFT ROLL 40 |
0.040 |
- |
† 100 + 200 |
KNAUF INSULATION |
POLYFOAM SUPADECK SYSTEM * |
0.031 |
*100 + 123 |
170 + 123 |
ROCKWOOL |
ROCKWOOL ROLL |
0.044 |
100 + 170 |
100 + 240 |
VENCEL RESIL |
JABLITE BOARD |
0.038 |
100 + 135 |
100 + 200 |
| * 100mm Crown Wool between the joists, 130mm Supadeck overlaying the joists |
| † 170mm Crown Loft Roll 40 between the joists, 123mm Supadeck overlaying the joists |
| |
Insulation in the Pitch of the Roof (Room in a Roof) |
| (Tiles, Tile battens, Sarking felt, 50mm Residual cavity (ventilated), Insulation
between timber, Vapour control membrane, 12.5mm Plasterboard @600mm centres) |
|
|
|
U-Value 0.20 |
MANUFACTURER |
PRODUCT |
LAMBDA
λ |
Thickness MM |
CELOTEX |
TUFF-R ™ ZERO GA3000Z |
0.023 |
150 |
KINGSPAN |
THERMAPITCH TP10 ZERO ODP |
0.023 |
150 |
KNAUF INSULATION |
POLYFOAM RAFTERSQUEEZE |
0.030 |
180 |
VENCEL RESIL |
JAVSQUEEZE |
0.038 |
215 |
Two Layer Insulation (Room in a Roof) |
| (Tiles, Tile battens, Sarking felt, 50mm Residual cavity (ventilated),
Insulation between and beneath timber rafters, 12.5mm Plasterboard @ 600mm centres) |
|
|
|
|
U-Value 0.20 |
MANUFACTURER |
PRODUCT |
CONSTRUCTION |
LAMBDA
λ |
Thickness MM |
CELOTEX |
TUFF-R ™ ZERO GA3000Z |
INBETWEEN
UNDERNEATH |
0.023 |
90
40 |
KINGSPAN |
THERMAPITCH TP10 ZERO ODP |
INBETWEEN
UNDERNEATH |
0.023 |
90
40 |
VENCEL RESIL |
JABLITE BOARD |
INBETWEEN
UNDERNEATH |
0.038 |
150
50 |
Two layer Insulation |
Unventilated Cold Roof - New Build or Retiling |
(Tiles, Tile battens, Breather membrane, Counter battens,
100mm Rafters with Insulation between and beneath,
25mm Battens with 400 centres only, 12.5mm Plasterboard) |
|
|
|
|
U-Value 0.16 |
U-Value 0.13 |
MANUFACTURER |
PRODUCT |
CONSTRUCTION |
LAMBDA
λ |
Thickness MM |
Thickness MM |
| |
|
RAFTERS @ 600mm CENTRES |
|
|
|
CELOTEX |
EXTRA-R ™ XR3000 |
INBETWEEN
|
0.023 |
100 |
100 |
|
TUFF-R ™ ZERO GA3000Z |
UNDERNEATH |
0.027 |
50 |
35 |
KINGSPAN |
THERMAPITCH TP10 ZERO ODP |
INBETWEEN |
0.023 |
100 |
100 |
|
KOOLTHERM K18
(Insulation + 12.5mm plasterboard) |
UNDERNEATH |
- |
62.5 |
52.5 |
|
KOOLTHERM K7
|
INBETWEEN |
0.021 |
100 |
100 |
|
KOOLTHERM K18
(Insulation + 12.5mm plasterboard) |
UNDERNEATH |
- |
62.5 |
52.5 |
| |
|
RAFTERS @400mm CENTRES |
|
|
|
CELOTEX |
EXTRA-R ™ XR3000 |
INBETWEEN |
0.023 |
100 |
100 |
|
TUFF-R ™ ZERO GA3000Z |
UNDERNEATH
+25mm BATTEN |
0.023 |
50 |
45
NO BATTEN |
KINGSPAN |
THERMAPITCH TP10 ZERO ODP |
INBETWEEN |
0.023 |
100 |
100 |
|
KOOLTHERM K18
(Insulation + 12.5mm plasterboard) |
UNDERNEATH |
- |
72.5 |
62.5 |
|
KOOLTHERM K7
|
INBETWEEN |
0.021 |
100 |
100 |
|
KOOLTHERM K18
(Insulation + 12.5mm plasterboard)
|
UNDERNEATH |
- |
62.5 |
52.5 |
Thermal Laminate Solution |
Ventilated - Existing Roof |
| (Tiles, Tile battens, Sarking belt, 50mm Residual cavity (ventilated),
Insulation 100mm between rafters, Thermal laminate
based on 150mm Rafters @400 centres) |
MANUFACTURER |
PRODUCT |
LAMBDA
λ |
LAMINATE
Thickness MM |
100MM INSULATION BETWEEN RAFTERS LAMBDA VALUE |
|
|
|
|
|
BRITISH GYPSUM |
GYPROC THERMALINE SUPER |
0.022 - 0.024 |
65 |
MINERAL WOOL - 0.040 |
|
|
|
50 |
RIGID INSULATION - 0.023 |
KNAUF DRYWALL |
PHENOLIC LAMINATE |
0.018 - 0.022 |
65 |
MINERAL WOOL - 0.040 |
|
|
|
50 |
RIGID INSULATION - 0.023 |
LAFARGE PLASTERBOARD |
THERMALCHECK K |
0.023 - 0.024 |
50 |
|
|
KOOLTHERM K7
|
0.021 |
100 |
100 |
|
