Specialists in External Wall Insulation Systems

With a wealth of experience in the trade, working locally, in the UK and Ireland, we aim to deliver the highest quality of work and customer satisfaction.

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With over 20+ years in the industry, you’re in good hands


Our business is about people and we ensure communication with each project is key.


We offer full transparency on every cost so there are no “surprises” at the end of the project.


Don’t take our word for it. Our reviews speak for themselves!


Founded by Gary Mc Geoghegan back in 2017, GMAC Plastering has established itself as one of the best providers of plastering services in Jersey.

  • Quality Workmanship and Superior Knowledge
  • A Job is Done on Time and on Budget
  • Proven Results for Setting Exceptional Standards
  • Professional Service for Private and Commercial
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We cater for private and commercial jobs alike, so if you only need one wall plastered or have a big project, we can provide helpful services and offer a wealth of advice on the best materials to use.

External Insulated Rendering Systems 100%
Internal Float & Set 100%
Internal Reskims 100%
Colored Render Systems 100%
Sand & Cement Render 100%
Plaster-Boarding 100%


With over 20 years experience and real focus on customer satisfaction, you can rely on us for all your render, plaster and insulation needs. We provide a professional service for private and commercial customers.

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Traditional Plastering & Rendering

From one-off small-scale to enterprise-level Plastering and Rendering


External Wall Insulation

Good external wall insulation not only protects the wall against temperature variations, but also brings energy benefits all year around.

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Traditional Semi-Dry Floor Screed

A quality semi-dry floor screed is key to a strong & reliable flooring.


Liquid Screed

If you only need one wall plastered or have a big project, we can provide helpful services and offer a wealth of advice on the best materials to use.



  • "GMAC plastering are a very professional service. Clean as plasters go. Got the job done quickly with a great finish. I’m going to use them again and would highly recommend them too"

    Chris De Malorey Romeril
    Professional Service
  • "I called Gary for a quote on a Wednesday afternoon. He was with me within a couple of hours and agreed on a price with no messing around. Arrived promptly at 8am the next day and the whole job was finished well within the promised timescale. I wouldn't hesitate to use Gary's services again or recommend him to friends and family.""

    James Eden
    Brilliant, Fast & Reasonably Priced Service.
  • "Gary & his lads have done a fantastic job on our house , and we would certainly recommend Gmac plastering to anyone."

    Allan Shaw
    5 Stars
  • "Great service as always. Job was done on time and to perfection as you can see in the photos of curved stair wall. Thanks gmac"

    Greg Kelly
    Great Service
  • "Gary is a little grafter and super reliable, we’ve used Gary numerous times now and will without doubt again in the future, Hallway next Gary"

    Lyndsey Stirling-Stewart
    Super Reliable
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