Cosyinsulation Reviews 

512
TrustScore 4.5 out of 5

4.7

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Review summary

Created with AI, based on recent reviews

Evaluating 72 reviews, reviewers overwhelmingly had a great experience with this company. Customers consistently praise the professionalism and efficiency of the service, noting that work is completed on time and to a high standard. The staff, including the installation crews and sales team, are frequently highlighted for being friendly, helpful, and respectful, ensuring a positive interaction from start to finish. Reviewers also appreciate the tidiness of the work, with many mentioning that the teams clean up thoroughly after themselves, leaving no mess. However, some customers also noted issues with post-installation services, specifically regarding the BER assessment process which was described as unhelpful. There were also isolated instances where rubbish was left behind in the attic or an engineer failed to arrive for a scheduled appointment, indicating a lack of communication.

What people talk about most

Service

Consumers find service to be positive, with many reviewers highlighting the professionalism and efficiency of... See more

Staff

Customers had positive experiences with staff, consistently praising their professionalism, efficiency, and... See more

Reviews shaping this summary

Rated 5 out of 5 stars

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 tim... See more

Company replied

Rated 5 out of 5 stars

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 ve... See more

Company replied

Rated 5 out of 5 stars

Overall very happy with the purchase - the install crew were top notch - flexible - explained everything - hard working - clean - knowledgeable, i have noticed a noticeable improvement in the heat... See more

Rated 5 out of 5 stars

From the time Richie came out to see our home. His whole mannerism and professionalism was second to none. He explained in great details about the SEAI grants which we did not avail of. We saved th... See more


Company details

  1. #14 of 19 best companies in Insulation contractor

Written by the company

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.


Contact info

4.7

Excellent

TrustScore 4.5 out of 5

512 reviews

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Replied to 100% of negative reviews

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4.7

All reviews

(512)

61 reviews in the last 12 months

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Companies on Trustpilot aren't allowed to offer incentives or pay to hide reviews. Reviews are the opinions of individual users and not of Trustpilot. Read more

Rated 5 out of 5 stars

Attic Insulation 3 locations

Overall very happy with the purchase - the install crew were top notch - flexible - explained everything - hard working - clean - knowledgeable, i have noticed a noticeable improvement in the heat retention on second and third floors, a major improvement for me has been the elimination of various breezes throughout the house. I would recommend the sales - install with Cozy.
[The crew came from Dublin, were to be here at 8,30 and arrived on the button]

Installation was in Co Monaghan

21 November 2025
Rated 5 out of 5 stars

5 Stars

Very satisfied with the work carried out. From initial consultation to work completed was smooth and professional. Would highly recommend this company. Many Thanks to Cosy insulation.

21 October 2025
Rated 1 out of 5 stars

I have been knocked back by 3 banks for…

I have been knocked back by 3 banks for remortgaging due to having this insulation done in my attic? Cosy insulation were no help to me whatsoever when I contacted them just said the information pack that they sent me when it was done is everything I need to send off to the bank. Bank came back and wanted a 10 year insured backed warranty which cosy insulation couldn’t provide for me they said they don’t do this? So basically I paid all this money to get this done to my house and it’s been a waste of time as now il never be able to sell my house unless I get this all removed from the attic which costs a hell of a lot more than it did to get it put in! This company need to do something about this or advertise better that if your a home owner this is the down fall of getting it done. Absolute disgrace and Iv heard and read I’m not the only one in this situation!!!

13 March 2025
Unprompted review
Cosyinsulation logo

Reply from Cosyinsulation

Hi Amy.

Your lender requested 4 documents. 3 of these documents we provided you with. The 4th document was a 10 year insurance backed guarantee. We did not tell you that we couldn't provide you with it. We told you that we could get you a quote for one and we also told you that if their were any further issues that we could get you a structural engineers roof report which 90% of lenders will accept. All of this is in the emails we sent to you 7/10/25. You did not respond to this email.
With all of the documents in place or a roof report on the property you will have no issue selling your house.
If your lenders have any other queries we will gladly answer them like we have this far.

Rated 1 out of 5 stars

A WASTE of our MONEY.

Edited after crazy BER Assessment - It appears our efforts at energy efficiency have been a waste of time and money : Hi,

I've emailed yourself and another Cozy email address so far with no reply whatsoever.

I'm not too pleased at all with the BER assessor you sent round post attic insulation.

We have made considerable changes and upgrades and his rating is a complete disaster to say the least.

While he was here he was also exceedingly rude to my wife.

We said nothing at the time as we were "at his mercy" so to speak.

We're not "Snowflakes" either so you can take my word for it and the assessors rudeness without me typing lines of details.

Anyway after spending roughly €18,000 including €2000 with yourselves we've been assessed as moving from a D2 to a D1.

Unbelievable really, quite staggering in fact and as you or any other reasonable person would rightly concur, neither my wife nor myself are too pleased with this service at all.

I have no idea what was being assessed as the assessor could only be described as harsh at the least, and that would be being kind to him.

I have been in touch with him ABSOLUTLY CONVINCED he must have made a mistake or pressed a wrong button but he says otherwise.

A sorry situation indeed and a terrible waste of our time, money and effort. Scarce resources WASTED on this project.

I've upgraded a previous home from an F to a C2 so I believe I know what I'm talking about and have enough experience to make a qualified assumption that the assessor is totally incorrect.

If you could shed any light on this state of affairs that might be helpful it would be greatly appreciated?

Regards,

P.S. In response to your reply it was YOUR COMPANY which provided the Assessor and assessment, whether through a third party or not. I should imagine it would be in your interests to ensure correct assessment is done following the job by the third party provided as part of your services. I can categorically state, this was NOT DONE in this instance and an INCORRECT assessment has been carried out followed by the issuance of an INCORRECT BER CERTIFICATE. Whether this has been done with or without an SEAI certificate of competency is in this instance irrelevant. Thank you.

16 September 2025
Unprompted review
Cosyinsulation logo

Reply from Cosyinsulation

Thank you for your feedback. We’re sorry to hear you were disappointed with the BER rating and the experience with the assessor.
As part of our summer promotion, we arranged a BER assessment free of charge for you. This was carried out by an independent SEAI–registered assessor. We do not employ, train, or manage these assessors, nor do we have any influence over their surveys or ratings. The assessor you dealt with was selected directly from the official SEAI list of approved professionals, and we had no prior connection to him other than forwarding on the job.
A BER is calculated on the entire property—including walls, floors, windows, doors, heating, and roof insulation together. Our work was limited to roof insulation only, so the overall rating is determined by many other factors outside of our scope.
We’re sorry to hear you felt the assessor was rude, but as he does not represent our company, this is not something we control. If you are unhappy with the manner in which the assessment was carried out or with the final result, the best course of action would be to raise this directly with the SEAI, as they oversee and regulate their registered assessors. You are also welcome to contract another independent assessor for a second opinion.
We feel it is unfair to receive a 1-star review for something completely outside our control. Our priority is always to deliver high-quality roof insulation and to help our customers improve their homes.

Rated 4 out of 5 stars

Just had new panels fitted

Just had new panels fitted and have already noticed that the conservatory was cooler during the last couple of days. Thanks to the fitters Matthew and Daniel who arrived early and completed the job quickly - tidying up as they went along. Would have loved to give 5 stars but unfortunately the sound of rain on the roof is much louder than I expected or was led to believe it would be.
Pauline P

22 August 2025
Unprompted review
Rated 5 out of 5 stars

Honest and Professional

Good communication from Miriam, particularly when I had a query on appointment date. Rod called to survey our attic but due to the nature of attic very quickly advised that we would need excess volumes of foam, resulting in an expensive quote. He also advised that this would not be suitable for our vaulted ceilings. White not being able to avail of the product, I appreciated Rod’s honesty and professional advice.

13 August 2025
Unprompted review

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