Suspended Timber Floor Insulation Detail

I can t get a definitive idea of the best way to do it.

Suspended timber floor insulation detail.

At the turn of the 18th century when construction techniques moved from boarded floors installed directly on the ground to suspended timber floors over a ventilated chamber the innovation solved a significant problem. The main elements during construction of the suspended timber floor are loading of joists positioning of joists the spacing of joists evenly spaced joists and sizes of joists. Suspended timber floors located above an unheated space where the insulation is installed below the floorboards or timber decking timber floors situated above an unheated integral garage. The building detail is for illustrative purposes only.

The answer to this problem can also be found in our project about stopping creaking floors and stairs. While knauf insulation offer various insulation products into suspended ground floor applications we would emphasise that site specific conditions should always be considered on a case by case basis and any generic product recommendations must always be subject to an onsite evaluation. Some support may be needed for the insulation timber straps timber battens or netting can all be utilised to help keep the insulation in place. Materials for suspended timber floor insulation.

Previously floor timbers had been prone to damp and rot thanks to their direct contact with the moist ground. This is a floor where the timber floorboards are attached to floor joists and the insulation suspended on timber battens between the joists. There are a variety of options for the material used in suspended timber floor insulation. In this blog post we aim to provide a simple practical guide to the best practice methods for fitting insulation boards such as kingspan kooltherm k103 floorboard into a suspended timber floor.

A disadvantage can be an unacceptable raising of the floor level necessitating step ups or alterations to details at door openings electrical sockets etc. I m 70 of the way through an eco retrofit of a 1940s bungalow windows already in place but still have about 30 m 2 of suspended timber floor to insulate and air seal. Suspended hollow or timber floors also have a tendency to creak as the nails work loose over time. The floor would typically be finished from above with a vapour control layer vcl if required and a suitable timber floor deck.