Naturheld 110 Wood Fibre Board (SQUARED EDGE 0.75M2)

Application

Insulating Cross Laminated Timber (CLT) Buildings Externally

It is strongly recommended to insulate CLT and glulam buildings from the outside so that the complete building structure is insulated. This will greatly diminish the risk of heat leakage through the junctions, such as where the wall meets the roof, and in the corners. The square edged Naturheld 110 wood fibre boards can be used for this purpose but because they are not very water-resistant, they must be covered over straight away with the water-resistant 60mm Naturheld 140 sarking boards or with the Ampack Ampatop Protecta Plus Breather Membrane. Due to excellent Y-Values, resulting from the thermal bridges being totally insulated, and good airtightness, the Building Regulations will be easier to meet with less stringent U-Values than if the thermal bridging was not addressed. This means that a thinner building frame can be used, saving costs. The Naturheld 110 boards are the most economical of all the wood fibre boards. They also have very good thermal conductivity values of 0.039 W/mK.

Insulating Roofs and Stud Walls Internally

Naturheld 110 can be installed below the timber roof rafters or to the inside of timber or metal stud walls in renovation projects, to very effectively reduce the risk of thermal bridging. It will supplement the cavity insulation to provide lower U-Values. In addition, the Y-Values will be improved due to addressing the thermal bridging and this, combined with good airtightness, will help to achieve Building Regulation requirements. However, the square-edged Naturheld 110 boards need to meet on a rafter or stud, so an alternative T&G wood fibre board may provide less wastage. Naturheld 110 can also be placed between the rafters or studs, if cut carefully to ensure a snug fit. This will provide excellent airborne sound insulation too. Naturheld 110 must be finished with plasterboard or a similar finishing board. The CE- marked Naturheld wood fibre insulation panels are made from new timber off-cuts sourced from local PEFC certified sawmills. The wood fibre boards will not emit any toxic chemicals into the interior environment, and they are carbon negative, which means that during their lifetime, they will store more carbon dioxide than they will emit during their manufacture, shipping and disposal.

Naturheld 110 wood fibre will protect the property from overheating during summer-time which is particularly critical in buildings where the loft space is used for living accommodation and in dormer bungalows, as well as in buildings with lots of south facing windows. In addition, the sound insulation of the building fabric will be greatly enhanced.

If internally insulating masonry walls, we recommend using Naturheld 140/180 boards which are more suited for this purpose.

Insulating Timber Joist Floors

Naturheld 110 can be used to insulate between the joists of suspended timber joist floors as well as below the joists so long as there is at least 150mm of ventilation space below the boards, to ensure that the water vapour can be released. The dense wood fibre boards will also reduce airborne noise transmission through floors. Naturheld 110 boards do not have enough compression strength though to use on top of floors. It is not recommended to use wood fibre insulation boards over concrete ground floors as there will be no ventilation space to allow the absorbed water vapour to evaporate.

Cutting and Storing the Wood Fibre Softboards

The panels can be cut with normal timber cutting tools e.g. a jigsaw, circular saw or reciprocating saw. It is recommended to use suction equipment to minimize dust. If a hole or gap occurs in the wood fibre due to a construction error, ensure that it is filled in with wood fibre pieces. Keep the boards dry when in storage and protect from damage. Do not stack any more than 2 pallets on top of each other.