---
title: "Reviews — exterior filler - Flapen"
canonical_url: "https://flapen.com/research/uk/diy-tools/exterior-filler/reviews"
last_updated: "2026-07-31T11:37:59.472Z"
locale: en
meta:
  description: "Niche score 60/100 · £110K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
  "og:description": "Niche score 60/100 · £110K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
  "og:title": "Reviews — exterior filler - Flapen"
---

# **exterior filler**

**Worth a look**

Shows low returns (0.4%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 26Growth 76Conversion 95Competition 53Returns 98Price range 38Avg price 23Brand share 50Review moat 48Quality gap 70

**Returns**

**Incredible****0.4%**

return rate — above 5% kills the launch gate

**Conversion**

**Incredible****12.3%**

search→purchase rate — share of searches ending in a sale

**Growth**

**Great****+62.2%**

90-day search growth — must beat 0% to launch

**Quality gap**

**Good****4.3★**

avg incumbent rating — lower means beatable quality

**Competition**

**Good****53%**

top-5 click share — leaders hold, buyers still browse

**Brand share**

**Okay****75%**

top-5 brand share — brands hold most of the demand

**Review moat**

**Okay****1,736.04**

avg incumbent reviews — the moat a new listing must climb

**Price range**

**Okay****£3.27–£22.22**

cheapest to priciest tracked listing — scored on the share inside $15–$100

**Market size**

**Okay****£110K**

£110K/yr · 107K searches

**Avg price**

**Bad****£8.40**

avg listing price — sweet spot $15–$100