Where’s the job?

Overview

• Installing conservatory roof insulation improves thermal performance, reduces heat loss and enhances comfort throughout the year.

• Skill level: 3 / 5 – moderate DIY experience with cutting, measuring and fixing materials is required.

• Typical duration: 1 – 2 days depending on the size of the conservatory and type of insulation chosen.

Safety First

• Check weather conditions before starting – a clear, dry day is essential.

• Use stable ladders and, if necessary, a safety harness when working at height.

• Wear gloves, eye protection and non-slip footwear to reduce injury risks.

• Ensure proper ventilation if using adhesives or foams.

• Avoid working in windy conditions which might affect the stability of insulation boards.

Tools & Materials

Step-by-Step

1. Assess the roof structure – check for any leaks or damage and measure the area to be insulated.

2. Prepare the surface – clean the roof, remove loose material and repair any small defects.

3. Cut insulation boards to size – ensure accurate measurements to fit curved or angled surfaces.

4. Fix the insulation – use appropriate adhesives or mechanical fixings to secure boards firmly.

5. Seal gaps – apply sealants or tapes along edges to eliminate drafts and moisture ingress.

6. Install a reflective foil (if required) – this helps reflect solar gain and further enhances insulation.

7. Final inspection – check that all boards are secure, gaps are sealed and the roof surface is even before any additional roofing layers are applied.

Completion Checks

• Insulation boards are securely fixed with all edges sealed.

• No noticeable gaps, moisture ingress or loose fixings.

• A final check confirms that the roof’s insulation performance meets expectations before any covering is reapplied.

• Visible improvements in heat retention reduce overall energy costs.

When to Call a Pro Instead

For conservatories with complex roof designs, significant water ingress issues or if structural repairs are needed prior to insulating, consult a professional installer to ensure optimal safety and performance.