B.6.1.2 W1(b): As W1(a) except with insulation partly in cavity and partly as internal lining If composite boards of plasterboard backed with insulation (of similar conductivity to that used in the cavity) are used internally then the total insulation thickness (cavity plus internal) may be used to calculate the Uvalue. If internal insulation is placed […]

B.6.1.2 W1(b): As W1(a) except with insulation partly in cavity and partly as internal lining If composite boards of plasterboard backed with insulation (of similar conductivity to that used in the cavity) are used internally then the total insulation thickness (cavity plus internal) may be used to calculate the Uvalue. If internal insulation is placed […]

B.6.1.2 W1(b): As W1(a) except with insulation partly in cavity and partly as internal lining If composite boards of plasterboard backed with insulation (of similar conductivity to that used in the cavity) are used internally then the total insulation thickness (cavity plus internal) may be used to calculate the Uvalue. If internal insulation is placed […]

B.6.1.2 W1(b): As W1(a) except with insulation partly in cavity and partly as internal lining. If composite boards of plasterboard backed with insulation (of similar conductivity to that used in the cavity) are used internally. Table B9 and B10 can be taken as applying to the total insulation thickness (cavity plus internal). If internal insulation […]

B.6.1.2 W1(b): As W1(a) except with insulation partly in cavity and partly as internal lining. If composite boards of plasterboard backed with insulation (of similar conductivity to that used in the cavity) are used internally. Table B9 and B10 can be taken as applying to the total insulation thickness (cavity plus internal). If internal insulation […]

B.6.1.2 W1(b): As W1(a) except with insulation partly in cavity and partly as internal lining. If composite boards of plasterboard backed with insulation (of similar conductivity to that used in the cavity) are used internally. Table B9 and B10 can be taken as applying to the total insulation thickness (cavity plus internal). If internal insulation […]

B.6.1.2 W1(b): As W1(a) except with insulation partly in cavity and partly as internal lining. If composite boards of plasterboard backed with insulation (of similar conductivity to that used in the cavity) are used internally. Table B9 and B10 can be taken as applying to the total insulation thickness (cavity plus internal). If internal insulation […]

1.2.4.3 Care should be taken to control the risk of thermal bridging at the edges of floors. All slabonground floors should be provided with edge insulation to the vertical edge of the slab at all external and internal walls. The insulation should have minimum thermal resistance of 0.7 m2K/W (25 mm of insulation with thermal […]

B.5.3.1 R3(a) Insulation between joists, 50 mm air gap between insulation and roof decking The insulation is laid between the joists. The depth of the joists is increased by means of battens if required. Installation guidelines and precautions A vapour control layer sealed at all joints, edges and penetrations, is required on the warm side […]

B.5.3.1 R3(a) Insulation between joists, 50 mm air gap between insulation and roof decking The insulation is laid between the joists. The depth of the joists is increased by means of battens if required. Installation guidelines and precautions A vapour control layer sealed at all joints, edges and penetrations, is required on the warm side […]