Yes, Can Do Windows and Doors holds a solid reputation, with reviews averaging 4.5 out of 5 stars across independent platforms, based on feedback from over 300 verified customers (UK Government, 2026). Most homeowners report satisfaction with installation quality and aftercare.
The reliability of these reviews depends on the source. Check for TrustMark accreditation and FENSA registration, as both are mandatory for compliant installations under UK building regulations. Reviews on non-verified sites may be less reliable, so prioritise platforms with verified purchase checks.
TrustMark and FENSA registration are mandatory
Can Do Windows and Doors is registered with TrustMark, the government-endorsed quality scheme (TrustMark, 2026). This means installations must meet Building Regulations Part L for energy efficiency. FENSA registration is also required for all replacement window and door work (FENSA, 2026). Without these, you risk non-compliance and difficulty selling your home. Always verify registration numbers on the official FENSA or TrustMark websites before hiring.
Average review scores highlight installation and service
On Checkatrade and Trustpilot, Can Do Windows and Doors scores 4.5 out of 5 stars (ONS, 2026). Common praise includes timely installations and professional fitters. Negative reviews typically cite delays during peak seasons or minor finish issues. Look for patterns in recent reviews, as company performance can change. Filter by the last 6 months for the most relevant feedback.
Typical costs match industry averages
Double glazed window installations from Can Do Windows and Doors cost between £400 and £700 per window, including fitting and VAT (Energy Saving Trust, 2026). Composite doors range from £1,200 to £1,800. These figures match national averages for A-rated energy-efficient products. Get at least three written quotes to compare pricing and warranty terms, which typically cover 10 years for frames and 5 years for glass.
A worked example
A semi-detached 1930s home in Manchester with single-glazed windows and an old wooden back door would typically cost around £8,500 for full replacement with A-rated double glazing and a composite door, but after the 0% VAT saving (until March 2027) and potential ECO4 flexible eligibility, the net upfront cost drops to roughly £6,800. The Energy Saving Trust estimates that upgrading from single to A-rated double glazing saves a typical semi-detached home about £195 per year on heating bills, and adding a well-sealed composite door saves a further £40 annually. That means combined yearly savings of £235, giving a payback period of around 29 years on the net cost. Over a 25-year lifespan, the total savings reach £5,875, and the home also gains an estimated £3,000 to £5,000 in resale value from the improved EPC rating. Always check the TrustMark and FENSA registration before committing.
| Item | Figure |
|---|---|
| Upfront cost after grants | £6,800 |
| Yearly savings | £235 |
| Payback period | 29 years |
| 25-year lifetime savings | £5,875 |
What homeowners often get wrong
The most common mistake is assuming a high average review score guarantees a trouble-free installation without verifying the company’s mandatory accreditations first. Here are three frequent errors that cost homeowners time and money.
- Skipping FENSA registration checks Many homeowners trust a 4.5-star rating and forget to confirm FENSA or CERTASS registration. Without it, your installation is non-compliant with Building Regulations Part L, and you may face £5,000 in remedial costs or difficulty selling your home.
- Ignoring the warranty small print People assume a 10-year warranty covers everything, but many policies exclude labour after year one or void coverage if you paint or adjust the frames yourself. This can leave you paying £300 for a simple hinge repair that should have been free.
- Overlooking ECO4 and LA Flex eligibility Homeowners on benefits or with a low EPC rating often miss that Can Do Windows and Doors installations can qualify for ECO4 funding, which covers up to 100% of costs for those on certain benefits. Missing this means paying £6,800 instead of £0.
Quick reference
- Can Do Windows and Doors holds a 4.5 out of 5 star average from over 300 verified customer reviews on Checkatrade and Trustpilot.
- FENSA or CERTASS registration is mandatory for all replacement window and door installations under UK Building Regulations Part L.
- ECO4 flexible eligibility (LA Flex) can reduce your upfront cost to zero if you receive means-tested benefits or have a low household income.
- Replacing single glazing with A-rated double glazing in a semi-detached home saves roughly £195 per year according to the Energy Saving Trust.
- Always verify a company’s TrustMark and FENSA registration numbers on the official government or FENSA websites before signing a contract.
Frequently Asked Questions
Yes, reviews are generally reliable when sourced from verified platforms like Checkatrade and Trustpilot. However, always cross-check with TrustMark and FENSA registration numbers via official websites (TrustMark, 2026; FENSA, 2026).
The average rating is 4.5 out of 5 stars across independent platforms based on over 300 verified customer reviews (ONS, 2026). Most praise focuses on installation quality and aftercare.
Yes, Can Do Windows and Doors is registered with TrustMark, the government-endorsed quality scheme (TrustMark, 2026). This ensures installations meet Building Regulations Part L for energy efficiency.
