Celotex Insulated Plasterboards

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Celotex Insulated Plasterboard

Get the best prices on insulated plasterboards here! Celotex Insulated Plasterboards (PL4000) are a quality product made up of a polyisocyanurate (PIR) core with a foil lining on one side and paper lining on the other. The foil lined side of the sheet is bonded to 12.5mm plasterboard. The plasterboard is made up of a Gyproc core with quality paper linings.

Celotex as a brand is renowned for its quality products and reliable services and has grown to become a go-to brand for builders and contractors across the construction industry. With a range of practical products at amazing prices, we can see why! The Celotex brand offers a wide material range designed to suit every insulation need including, pitched roofs, flat roofs, walls, floors, and ceilings. Other Celotex products include Thermaclass, Cavity wall boards, and insulation boards. The Celotex range can be found in the link below

Product Information

  • Product code – PL4000
  • The boards are 2400mm x 1200mm with a range of thicknesses to choose from between 25mm and 65mm.
  • The boards give a coverage of 2.88m2.
  • The bonded Plasterboard has a tapered edge for easier and more durable completion.
  • Each insulation board is bonded to a 12.5mm sheet of plasterboard.
  • Celotex insulated Plasterboards have an excellent thermal conductivity of 0.022W/mK.
  • With less heat escaping, your energy bills we be reduced by up to 35%.
  • These board can be installed to walls, pitched roofs and flat roofs with the dot and dab method or by mechanically fixing to the walls, the method you choose is dependent on the building and your level of expertise!
  • The applications include in between and under rafter and joist applications, solid masonry walls and timber frame lining applications.

Insulated Plasterboard Size Guide

  • 37.5mm – 25mm insulated board bonded to a 12.5mm plasterboard PL4025           Thermal Resistance (R-Value): 1.20m2.K/W
  • 52.5mm – 40mm insulated board bonded to a 12.5mm plasterboard PL4040           Thermal Resistance (R-Value): 1.85m2.K/W
  • 62.5mm – 50mm insulated board bonded to a 12.5mm plasterboard PL4050           Thermal Resistance (R-Value): 2.30m2.K/W
  • 72.5mm – 60mm insulated board bonded to a 12.5mm plasterboard PL4060         Thermal Resistance (R-Value): 2.75m2.K/W
  • 77.5mm – 65mm insulated board bonded to a 12.5mm plasterboard PL4065         Thermal Resistance (R-Value): 3.00m2.K/W

Why Insulated Plasterboards?

  • Insulated Plasterboards are a two-in-one product that can improve the thermal quality of the building whilst providing a finishing material for the walls and roof.
  • Save your time and money! Handling, cutting, and installing can be applied to one product instead of two, meaning a quicker turnaround time and less waste.
  • With a low thermal conductivity of just 0.022W/mK, less heat is allowed to pass through the walls and ceilings, keeping your heat where it should be – in your home!
  • Whilst you save you money on your bills, you also create a more energy efficient environment by reducing climate change and global warming levels by reducing heat loss.
  • Use Insulated Plasterboards in your new build, refurbishment project, or to upgrade current building regulation standards. This versatile product has many benefits.
  • The most popular Insulated plasterboard size is 37.5mm.

How do you cut and install Insulated Plasterboards?

  • Insulated Plasterboards can be cut by first measuring and marking the boards to size and cutting with a fine-toothed saw. They can also be cut by scoring the insulation side with a sharp blade, cutting through to the plasterboard paper. Then snap the board over a hard end and score the other side of the board.
  • Protect gear such as gloves, masks, and goggles should be worn when cutting insulated plasterboards to prevent irritation caused by the material fibres.
  • Please note this is a guide only. Always consult a building professional before insulation your domestic or non-domestic building. Installing the incorrect insulation materials or using an incorrect installation method can be a timely and costly mistake.
  • Dot and Dab method – Cut the boards to size making sure they are cut 15mm shorter than the top to bottom length of the wall and they are cut to fit around outlets and fixings. Mix and apply the required adhesive around the room to line with the board’s perimeter and centres. Take into consideration uneven walls and put less or more adhesive where required. Press the boards onto wall and pat into place using your hands to avoid damaging the boards. Use a spirit level to check the boards are even. See video below.

  • Mechanically Fixing method – Fix timber battens around the ceiling and floor level of the walls and horizontally around the room at 600mm centres. Be sure to cut around all openings and fixings such as windows and plug sockets. Fix the boards onto the battens making sure screws go through the boards and only halfway into the battens. Join the boards at the centre of the battens. See the video below.

Certifications and Safety

  • All Insulated plasterboards are CFC, HCFC and Formaldehyde Free with zero ozone depletion potential (ODP) and low global warming potential (GWP)
  • All Celotex products are manufactured under Environmental Management System – ISO 14001:2015.
  • Declaration of performance – covered by a harmonised standard: BS EN 13950:2014
  • Achieves a BRE Green Guide A+ rating.
  • BBA approved – certificate 16/5357.
  • Behaviour in relation to fire — the plasterboard face of the product has a reaction to fire classification of Class B-s1, d0 to BS EN 13501-1: 2018 and its use is restricted to the below.
  • The Certificate holder has not declared a reaction to fire classification for the reverse side and so where this forms the face of an internal cavity, the cavity should be subdivided with cavity barriers in accordance with the requirements of the documents supporting the national Building Regulations.
  • In England and Wales, the product should not be used on buildings with a storey more than 18m above the ground but may be used on buildings at any proximity to a boundary.
  • Durability — the product is durable, rot proof and sufficiently stable to remain effective for the life of the building in which it is installed.
  • The management system of Celotex has been assessed and registered as meeting the requirements of BS EN ISO 9001: 2015 and BS EN ISO 14001: 2015 by SGS UK Ltd (Certificates GB91/504 and GB11/83526 respectively).
  • Jointing and finishing of the plasterboard lining are carried out in the appropriate manner in accordance with BS EN 13914-2: 2016, applying plasterer’s tape to all joints. A finishing skim coat of 2 mm of plaster should be applied to complete the installation. 18.2 Any gaps between the ceiling and the wall must be filled.