Roof Pitched
The high performance pitched roof system featuring PAVATEX woodfibre complies with the most stringent of standards – from baseline building regulations through to Passivhaus.
Excellent thermal performance, high protection from summertime overheating, humidity regulation, acoustic insulation and superior sustainability credentials. This low embodied carbon solution is the first choice for specifiers and homeowners alike. Woodfibre roofs are the simple, yet sensible system for zero carbon homes of the future.
The system is suitable for most external finishing options, including metal, clay and slate tiling. All bold components for the system are available from Unity Lime.
CROSS SECTION OF SYSTEM
- Roofing (tiles, slates, sheeting etc.)
- Min 50mm ventilation one.
– 25mm tiling batten
– 38mm counter batten with PAVAFIX SN BAND - (Optional) Breathable Membrane
- Above Rafter Insulation
– ISOLAIR - Between Rafter Insulation
– PAVAFLEX or
– PAVATEXTIL-P
- Airtightness & Racking (OSB3/DB3.5 MEMBRANE)
– Taped with PAVAFIX - Service void 25mm – optional (can be insulated for improved performance)
- Plaster carrying board + skim
COMPONENTS AND ACCESSORIES FOR ROOF PITCHED
-
ISOLAIR MULTI Wood Fibre Insulation Boards£18.47 – £1,232.00 -
PAVAFLEX Wood Fibre Insulation£29.87 – £520.00 -
PAVATEXTIL P Thermo-Acoustic Insulation£55.61 – £453.40 -
HECO TOPIX – Timber Fixings£11.01 – £89.46 -
STRH Timber Fixings + Washers – Box of 100£34.62 – £69.33 -
ADB Breatheable Sarking Membrane£200.67 (inc. VAT £240.80) -
DB3.5 Internal Airtightness Membrane£96.60 (inc. VAT £115.92) -
PAVATEX UDB Weldable Sarking Lining£422.80 (inc. VAT £507.36) -
ISO-BLOCO 600£13.79 – £20.56 -
PAVAFIX Airtightness Tape (60, 20/40, 150)£21.21 – £56.00 -
PAVAFIX SN Band – Screw Sealing Tape£10.64 (inc. VAT £12.77) -
PAVATAPE (75, 150) – External Weathertightness Tape£38.64 – £52.90 -
PAVATAPE 12 – Membrane Tape£14.84 (inc. VAT £17.81) -
PAVATAPE FLEX – Penetration Tape£17.08 (inc. VAT £20.50) -
PAVAPRIM Primer – 1L£17.50 (inc. VAT £21.00) -
Eaves Vent Strip – Aluminium – 2.5m£13.53
SYSTEM PERFORMANCE
u-values
0.26 – 0.08
y-values
0.05 – 0.02
Airtightness
5 – 0.6 @50pa
