cosyinsulation.co.uk

4.7
4.7 Based on 61 reviews

Kingspan Synthesia insulation is the most energy efficient and environmentally friendly insulation on the market. It offers an eco friendly form of home insulation, with a lifetime guarantee. We work throughout the UK and Ireland....

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Average Rating

4.7

/
5

61 Reviews

5 Star
90%
4 Star
3%
3 Star
0%
2 Star
3%
1 Star
3%

All Reviews

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Review Time

Patricia Fleming
We rang and got a quote from Cosy insulation. We decided to go with them. We rang and someone came o

We rang and got a quote from Cosy insulation. We decided to go with them. We rang and someone came out to put insulation in. Turns out the guy had left cosy insulation and went out on his own and never told us. Cosy insulation would not stand over it even tho the were the first point of contact.

1
Date of experience: Jan 29, 2026
Ms Margaret Russell
Excellent job…

Very nice staff who did an excellent job and left the place spotless. My home is much warmer.

5
Date of experience: Jan 27, 2026
customer
The job was carried out on time and…

The job was carried out on time and professionally.

5
Date of experience: Jan 21, 2026
David McCormack
We had freezing attic that makes our…

We had freezing attic that makes our house cold , we constantly put turf on our range to keep the house warm. Then your crew came to spray insulation in our attic, they were very hard workers and very clean which I was very impressed with them.So now the house is unbelievable warm and less turf on our range , saving turf. It made a huge difference thank God. I'm so happy and I told a lot of my friends about cossy insulation

5
Date of experience: Jan 20, 2026
Simon Quinn
Service was great, customer service was let down by one individual

I contacted Cosy through Instagram, guy came out and gave a run through of whats done, and I signed up on the day. The lads came about a month later and did the insultation no problem. About 2 weeks later a chap came to do the BER no issues. The day after the BER guy came I got a call from Sinead in the office asking whether I received a form from the SEAI, which I hadn't. She asked whether I could chase this up for them. I said, well its not really up to me to chase it as all of the grant side of things was meant to be done by Cosy. She got really short on the phone and said "fine I will take care of it" and then hung up. Poor customer service, poor attitude.

4
Date of experience: Jan 20, 2026
Carol Dunne
Very efficient and clean service.

Very efficient and clean service.

5
Date of experience: Jan 19, 2026
customer
Very quick and efficient

Very quick and efficient. Easy to deal with.

5
Date of experience: Jan 16, 2026
Catriona
Amazing service !

Amazing service !! Very quick to answer phones, reply to emails & callbacks. Had a very pleasant consultation which was quick and within budget. They live up to their name as the work done was on time & extremely professional. We also received a callback to confirm that we were happy with the job and received our warranty certificate.

5
Date of experience: Jan 16, 2026
Mary Hayes
Very professional good service on time

Very professional good service on time

5
Date of experience: Jan 16, 2026
Margaret Giles
From the get go

From the get go , clear info, set amount , set date and time , clean fast work The heat now in the house especially the first floor is unbelievable no rads needed at all

5
Date of experience: Jan 13, 2026

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