# Insulated Double Flange Cavity Closer – Supafix – 100mm × 2.1m

Supafix (SF) Flexicloser insulated cavity closers are an easy way to achieve Building Regulations compliance when closing cavities where cavity widths are unknown or vary from site to site. Supafix Flexicloser can be installed in cavity widths of 50-100mm.

**Benefits**

-   Easy to install
-   Weather Rating Standard/ Flush = Severe Check Reveal = Very Severe
-   Reduces the risk of condensation, mould, and moisture migration across the cavity
-   Complies with Part L Building Regulations
-   No ties required - simply nail to blocks
-   Overcomes cavity width variations
-   Can be used on timber frame constructions

## Details

- **Price:** 10.98 GBP
- **Vendor:** QUANTUM PROFILE SYSTEMS LIMITED (Q05G)
- **Type:** Cavity Wall Insulation
- **Tags:** Building Materials, Cavity Closer, Cavity Wall Insulation, Insulation, Local

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 10.98 GBP | In stock |

## Images

- Insulated Double Flange Cavity Closer – Supafix – 100mm × 2.1m

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> Source: [Carvers Building Supplies](www.carvers.co.uk/products/cavity-closer-insulated-double-flange-supafix-sf100-100mm-x-2-1mtr)
> Updated: 2026-06-16