35mm Celotex TB4000 PIR Insulation Board - TB4035

Guide Price
35mm Celotex TB4000 PIR Insulation Board - TB4035
Guide Price: £51.21 (£61.45 inc VAT)
Price per m2: £17.78/m2 (£21.34 inc VAT)
5 or more £50.80 (£60.96 inc VAT)
10 or more £50.34 (£60.41 inc VAT)
20 or more £49.90 (£59.88 inc VAT)
- Product Code: A1-114
- Delivery Time: 1-3 working days
- Brand: Celotex (Tech. support: 01473820850)
- Model and Size: 1200x2400mm - 2.88m2
- Weight: 4.23kg
Our ratings on 07-05-2025:

4.7 out of 5 - Excellent


4.8 out of 5
35mm Celotex TB4000 PIR Insulation Board - TB4035
Width: 1200mm
Length: 2400mm
Coverage: 2.88m2
Density: 42kg/m3
Weight/m2: 1.47kg
Weight: 4.23kg
Thermal Conductivity: 0.023W/mK
R-Value: 1.55m2K/W
Celotex TB4035 is targeted at cut-to-fit applications between rafters or joists and enables users to achieve lower U-values with a single layer of insulation than has previously been possible. TB4012 is also appropriate for use in floors and walls. With low emissivity foil facings, TB4012 is manufactured from rigid polyisocyanurate (PIR) using a blend of blowing agents that have zero ozone depletion potential (zero ODP) and low global warming potential (GWP).
Note:
- Would also be known as TB3035 from January 2018.
APPLICATIONS
- Pitched Roofs
- Flat Roofs
- Solid Masonry Walls
- Timber Framed & Steel Framed Systems
- Floors
CHARACTERISTICS
- Specifically designed to eliminate thermal bridges
- The thinnest PIR insulation
- Standard board size of 1200mm x 2400mm
- Easy to cut and shape
- Low emissivity foil facings giving improved thermal insulation
- High performance within cavity air spaces
- Long-term energy savings for buildings
CERTIFICATION
- CE marking compliance to BS EN 13165
- Manufactured in accordance with quality management system ISO 9001 and environmental management system ISO 14001
- Achieves an A+ rating when compared to the BRE Green Guide 2008
Brand: Unilin (prev. Xtratherm)
Model and Size: 2400mm x 1200mm - 2.88m2
Delivery Time: 1-3 working days
35mm Unilin Thin-r XT/PR-UF has a core of polyisocyanurate (PIR) bonded to low emissivity textured aluminium foil facings. Unilin XT/PR-UF board offers excellent insulation performance with excellent thermal conductivity. Unilin XT/PR-UF is CFC & HCFC free and is manufactured under the high..
Guide Price: £22.37
£26.84 inc VAT
Brand: Celotex
Model and Size: 1190x450mm - 2.7m2
Delivery Time: up to 7 days
115mm Celotex Thermaclass Cavity Wall 21 is a high performance rigid PIR full fill cavity insulation board with low emissivity foil facings offering enhanced thermal performance (0.021 W/m.K) within cavity air spaces. It can be installed with up to a 10mm residual cavity or as a full fill solu..
Guide Price: £106.25
£127.50 inc VAT
Brand: Celotex
Model and Size: 1200x2400 - 2.88m2
Delivery Time: 1 - 5 working days
Celotex PL4015 is a high performance thermal insulation board where the 15mm PIR insulation is bonded to 12.5mm tapered edge plasterboard. PL4015 is manufactured from rigid polyisocyanurate (PIR) using a blend of blowing agents that have zero ozone depletion potential (zero ODP) and low global warmi..
Brand: Celotex
Model and Size: 450x1200mm - 95.04m2
Delivery Time: 3 - 5 days
Celotex CG5050 is especially designed for partial fill cavity wall insulation, offering great thermal performance due to substantial R and U values, with decreased board thickness and lower emissivity values due to the aluminum foil facings on both sides of the PIR core. This set of products pr..
Brand: Celotex
Model and Size: 2400x1200mm - 2.88m2
Delivery Time: 1-3 working days
50mm Celotex GA4050 is a multi-purpose insulation board that provides a solution to overcome localized thermal bridges. Featuring a low emissivity foil facings, this board has been manufactured from tough polyisocyanurate (PIR) using a perfect mix of certain blowing agents which have zero ozone depl..
£21.93
£26.32 inc VAT
Brand: Celotex
Model and Size: 1200x2400mm - 72.00m2
Delivery Time: Out Of Stock
Celotex FR5090 is one of the available dimensions of the Celotex FR5000 PIR insulation boards made from polyisocyanurate rigid core and faced on both side with low emissivity aluminum foils for improved thermal performance. The product is applicable to different types of constructions incl..
Guide Price: £2,186.31
£2,623.57 inc VAT
Brand: Celotex
Model and Size: 1200x2400mm - 2.88m2
Delivery Time: 1-3 working days
Celotex TB4040 is targeted at cut-to-fit applications between rafters or joists and enables users to achieve lower U-values with a single layer of insulation than has previously been possible. TB4012 is also appropriate for use in floors and walls. With low emissivity foil facings, TB4012 is manufac..
£22.68
£27.22 inc VAT