Is it Worth Insulating Internal Walls?

Internal and external solid wall insulation both come with a fair share of cost and upheaval. This page is dedicated solely to internal solid wall insulation, however, you can find more information on external wall insulation on our external solid wall insulation page. Internal wall insulation, whilst effective, can pose a number of issues. Granted, it is less expensive than external solid wall insulation - up to 50% less in fact - but it is less efficient, potentially more difficult and time-consuming, especially if the property is inhabited while the work proceeds. Installing internal wall insulation can indeed cause disruption, as it may require switches, radiators, and kitchen units to be removed and replaced. What's more, it requires a lot of attention to detail as creating an airtight layer is essential; awkward areas such as reveals and floor voids will need extra attention in order to seal them properly. Consequently, you must ensure that internal wall insulation is the best possible solution for a property before moving forward with your project. While internal wall insulation may have its difficulties, it is a more productive solution than doing nothing at all and has a higher return than external wall insulation - making it worth exploring in spite of the challenges.

What Type of Walls Can Internal Insulation Be Fitted To?

Internal insulation is specifically designed to be installed on solid walls, such as cavity brick or block walls (man-made masonry). Unlike cavity walls, solid walls feature no gap, so they can't be filled with cavity wall insulation. You can also apply internal insulation to the internal surface of natural stone walls. A timber frame isn't out of the question either.

Can Solid Wall Insulation Cause Damp?

If the internal walls of your home are plagued by dampness, you will need to take care of this before adding insulation. If not taken care of, insulation can cause further damage to both the wall and your insulation by trapping moisture. To avoid any future issues with dampness, use damp proof materials to line your wall before repainting it and installing new insulation. If installed properly, solid wall insulation will not cause or exacerbate damp problems. Prior to beginning any work, installers will do a thorough inspection of your property to confirm that it is in good condition overall and that the walls, floor, and ceiling are dry. This would entail attending to current dampness issues as well as problems such as cracked bricks, missing mortar between joints, or waterlogged gutters which could pose difficulties down the road.

Internal Wall Insulation | Materials Market

30mm Thermal Basic EPS Insulated Plasterboard 2400mm x 1200mm

Internal Wall Insulation

30mm Thermal Basic EPS Insulated Plasterboard 2400mm x 1200mm

100mm Rockwool RW5 Acoustic Sound Insulation Slab (1.44m2/Pack)

75mm Rockwool RWA45 Acoustic Sound Insulation Slab - Pallet of 20 Packs (86.4m2/Pallet)

27mm XPS Laminate Plus Insulated Plasterboard 2400mm x 1200mm

110mm Celotex XR4110 PIR Insulation Board 2400mm x 1200mm

125mm Unilin Xtratherm Thin-R PIR Insulation Board 2400mm x 1200mm

40mm Thermal Basic EPS Insulated Plasterboard 2400mm x 1200mm

37.5mm Kingspan Kooltherm K118 Insulated Plasterboard 2400mm x 1200mm (21/Pack)

62.5mm Kingspan Kooltherm K118 Insulated Plasterboard 2400mm x 1200mm (12/Pack)

165mm Celotex XR4165 PIR Insulation Board 2400mm x 1200mm

52.5mm Kingspan Kooltherm K118 Insulated Plasterboard 2400mm x 1200mm (15/Pack)

200mm Celotex XR4200 PIR Insulation Board 2400mm x 1200mm

100mm Knauf Acoustic (APR) Insulation Roll - Pallet of 24 Rolls (296.64m2/Pallet)

72.5mm Kingspan Kooltherm K118 Insulated Plasterboard 2400mm x 1200mm (11/Pack)

75mm Rockwool RW5 Acoustic Sound Insulation Slab (2.16m2/Pack)

100mm Kingspan Kooltherm K112 Framing Insulation Board 2400mm x 1200mm (3/Pack)

60mm Rockwool RWA45 Acoustic Sound Insulation Slab (5.76m2/Pack)

40mm Rockwool RWA45 Acoustic Sound Insulation Slab (8.64m2/Pack)

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