Roof & Ceiling Insulation

Insulation is the single highest-return energy upgrade most Australian homes can make - and the most badly done. We see ceilings with no insulation at all, batts compressed to half-thickness from people walking on them, missing coverage above wet areas, and the worst: insulation packed hard against non-IC-rated halogen downlights, which is a documented house-fire cause. Insulation has to be the right product, the right R-value and installed without compression or gaps.

Tradetek's installers work to AS 3999 (the installation standard for thermal insulation) and target NCC 2022 R-values - R5.0 minimum for ceiling in Sydney climate zone, R6.0 preferred. We use Earthwool, Bradford Gold and Knauf glasswool, plus polyester options for asthma-sensitive households. Batts are laid in two layers cross-hatched where space allows, and gaps around penetrations are foam-sealed.

Blow-in top-up uses cellulose or loose-fill glasswool over existing settled batts to restore R-value without ripping the original out. Pneumatic delivery achieves consistent depth and density measured against a marked depth-gauge stick. Existing downlights are caged with IC-F covers or replaced with IC-F rated LED units before insulation is laid - the only way to safely insulate over downlights.

Foil sarking under metal re-roof projects adds reflective barrier (R0.4 single-sided, R1.0 double-sided) and crucially provides a secondary water barrier in case of sheet penetration. We install Anticon blanket (40mm or 60mm) on every metal re-roof for the noise and thermal benefit combined. Every job hands over with the manufacturer's R-value documentation registered to your address.