CosyNest Garden Room
CosyNest Garden Room
Transform your garden into a year-round sanctuary with the CosyNest Garden Room - a premium, fully-insulated Bespoke garden space designed for comfort, style, and versatility.
Premium Build Quality
Our garden rooms are meticulously crafted from high-quality materials by skilled professionals, ensuring exceptional durability and performance in all weather conditions.
Key Features
Superior Roofing System: Flat roof structure featuring comprehensive insulation and finished with high-quality EPDM rubber membrane for complete weather protection and thermal efficiency.
Customisable External Cladding: Choose from our extensive range of composite cladding available in many types, colours, and styles. Our durable cladding delivers a classic, timeless appearance whilst standing up to the British elements.
High-Performance Glazing: Double-glazed doors and windows available in various types and sizes, providing excellent thermal performance and natural light whilst maintaining energy efficiency.
Complete Electrical Package: Fully equipped with LED downlights, double sockets, external lighting, and a smart heater - everything you need for a comfortable, functional space.
Professional Interior Finish: Walls painted crisp white as standard with hard-wearing floors installed. Upgrade options include custom colours, feature walls, MDF panelling, or matching interior cladding.
Flexible Sizing Options: Available in many shapes and sizes to meet your specific needs and garden space requirements.
Advanced Construction System
Weather-Resistant Framework: Built with 25mm x 50mm treated timber battens creating optimal airflow cavities with insect mesh protection.
Engineered Structure: Constructed with structurally engineered 90mm or 140mm CLS timber frame panels and professional-grade 9mm OSB board sheathing.
Superior Insulation: Choose between Mineral Wool or Rigid PIR options for optimal thermal performance.
Advanced Weather Protection: Equipped with Protect TF200® high-performance breather membrane and internal vapour control layer for exceptional moisture management.
Perfect for: Home offices, art studios, relaxation spaces, hobby rooms, or any application requiring a comfortable, weather-tight outdoor room that can be used all year round.
Pricing
Prices start from £10,000 - final cost depends on size, specifications, and customisation options.
Ready to create your perfect garden retreat? Contact our team to discuss size options, customisation possibilities, and installation.
Visit cosynest.uk for more information.
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Let customers speak for us
from 149 reviewsEverything we needed was in stock. Was straightforward and quick
Will use again if required

Westry grass .
Had my landscaper for the westry grass down 5x11 and it looks amazing .The grass is great I’ve stood on it numerous times and doesn’t flatten, not only that the grass looks realistic . Had non stop comments on it from friends family and neighbours . Highly recommend.

very nice material to work with looks excellent when it is built together

Excellent service from the staff both very helpful and knowledgeable on helping my wife and I choose which grass was suitable for our garden and the 40mm Coll did the job. Thanks again.

Grass looks fantastic on the old slabs that were there before. Great service and advice from the team at grass yard, and the price was much much cheaper than Grants or St Andrews for better quality of grass. Have already recommended grass yard to a couple of friends who are doing a bit of gardening DIY.

Bought these slats which are good quality and great price .staff are so helpful

Very happy with the step edge boards easy to fit and look great.

We recently purchased ash grey composite decking to replace the timber boards.
The job is in the early stages however work that has been carried out is fist class and looks so much better that the old timber boards.
Looking forward to the finished product in the coming weeks and minimal maintenance going forward.
I can highly recommend the grass yard team for their professional support in my purchase.

Iam moving into a new build and unfortunately my garden is 26m x 12m so is a big space and will have to wait until I get in on 11th July as probably not be able to afford to cover whole space and don’t want to choose the proper product

Great to deal with had what I was looking for 💙

Great quality! Great idea and led me to a purchase
