Therma-Flect Roof Board – Technical Data

TF Warm
Roof Board
Thickness

joist Centres* U-Value
Achieved

Thermal
Resistance
m:²K/W

Coverage
Per Pack m²

Boards
Per Pack

EPS Silver
140mm 400mm 0.2 5.533 1.92 4
130mm 600mm 0.2 5.200 2.88 4
75mm 400mm 0.3 3.366 3.36 7
70mm 600mm 0.3 3.200 5.04 7
EPS Gold
115mm 400mm 0.2 5.816 1.92 4
105mm 600mm 0.2 5.381 2.88 4
65mm 400mm 0.3 3.642 3.36 7
65mm 600mm 0.3 3.188 5.04 7

Based on Nominal 50mm Trusses
NB – Please supply rafter centres & widths

Performace Test Data of Insulation

EPS Silver (expanded Polystyrene) EN13163 EPS 70 Grade (Fire Retardant)
All products are both CFC and HCFC Free
Thermal Resistance value of Bubble Foil is 0.579m2K/W.
‘k’ value of EPS SILVER is 0.030 W/mK.
‘k’ value of Polyurethane is 0.023 W/mK.
N.B. Trusses must be spaced accurately to ensure a tight fit.

Products Available

Therma-Flect Roof Board 1.2m length
Refurbishment - ANY TRUSS CENTRES OR WIDTHS CAN BE CATERED FOR
YBS Foil Tape: 75mm x 50m
Tilt Board Membrane: Width-400mm/Length-100m
(For use with tilt board, ridges and hips)
Actual board width will be determined by rafter centres for invoicing purposes

Technical Refernce
BS5250:1989(1995)
Code of practice for the control of condensation in buildings
BS5534:Part 1:1997
Code of practice for slating and tiling (including shingles): Design
BS8000:Part 6:1990
Workmanship on building sites: Code of practice for slating and tiling of roofs and claddings
BS EN ISO 6946:1997
Building components and building elements: Thermal resistance and thermal transmittance Calculation method

Building Regulations 2000
Approved Documents L1 & L2

Building Standards Part J Sept 2001

Building Research Establishment
BR282 Thermal Insulation: Avoiding risks 2002

Foil Bubble Membrane
Tested for emissivity and thermal resistance by the National Physics Laboratory, England. Composite board fully tested by Sheffield Hallam School of
achieves 0.2 U-Value through roof
Fully insulates and waterproofs in one application
No felt or vapour barrier required Meets: Part L1 & L2 andPart J
Major labour savings...
Boards can be pre-cut to fit 		Meets NHBC standards
High performance No special fixings required

FULLY PATENTED/CERTIFIED
Therma-Flect Roofboard: 050/98

 

© YBS Insulation Limited 2005 All rights reserved.