Insulation

1. Insulation Wall insulation Cavity wall insulation / Solid wall insulation Roof insulation Floor insulation

2. Cavity wall insulation • The insulation can either be • Cavity fill (Retro-fitted) • As built • Retro fitted insulation means the insulation has been installed after initial construction, this is more common in older properties, usually built before 1980, but can be found in more modern properties • As built insulation means the insulation was installed when the property was built, usually so the building complies with building regulations. • As built insulation does not need to be specified in the software, stating ‘As Built’ will mean the software assumes there is insulation in line with building regulations for the date of the building

3. “As Built” Cavity Insulation

4. Cavity wall Insulation

5. Retro-fit Cavity Insulation • This insulation is pumped into the building through small holes drilled into the brick work

6. Look for Drill Fill Holes • The drill holes leave a vital bit of evidence to show a wall is insulated • The drill holes are in a regular pattern, usually 2 or 3 under each window • The drill holes are always in the mortar at a brick joint

7. Drill Holes • This is generally the pattern of drill holes you will see for cavity fill

8. What about this? Wall Tie Replacement • If you come across drill holes, the are not cavity drill holes. • These are the marks where wall ties have been replaced

9. What are these holes for? DPC Injection • Damp proof course injected into 1 course of bricks at ground level, usually on older properties which either had no damp proof course of the DPC failed

10. Solid wall – External Insulation • To identify if a property has solid/external wall insulation have a look for an extra face on the wall. • Typically it will have a step at the bottom of the wall and the bottom two rows of bricks will be visible.

11. Solid wall – External Insulation

12. Thickness of Internal/External Wall Insulation The thickness of internal or external wall insulation can be specified. Options are: 50, 100, 150mm or Unknown Selecting unknown will automatically default to 50mm U-value can be entered if known and there is documentary evidence

13. Cavity Wall with Internal/External Insulation RDSAP allows a cavity wall with a filled cavity to be entered with additional internal or external insulation. The thickness of the internal or external insulation should be recorded where possible Convention 3.07: ‘If there is both internal and external wall insulation add the insulation thicknesses together and enter as external’

14. Loft Insulation- Joists

15. Insulation Between Joists

16. Important to Maintain Airflow in Loft It is important to keep airflow in the loft, if there is damp in the loft insulating it without keeping airflow will make this worse.

17. Insulation at Rafters • Where insulation is located at rafters you can specify the thickness as 50, 100 or 150mm • If there is insulation at joists and rafters then ignore the rafter insulation thickness

18. Floor Insulation Floor insulation options • As built – this indicates that the floor insulation remains as it was when originally installed, and there is no evidence that insulation has been fitted. This option assumes insulation levels based on the age band selected for the property • Retro-fitted – this option should only be selected if insulation is present and can be confirmed by DEA observation or documentary evidence such as a guarantee certificate • Unknown – this option should only be selected if you are unsure about the level of insulation. This option assumes insulation levels based on the age band selected for the property and will remove any recommendation for floor insulation.

19. Any Questions?