Mercia Premium Helios Summerhouse - 10 x 8ft

Mercia Premium Helios Summerhouse - 10 x 8ft

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Mercia Premium Helios Summerhouse - 10 x 8ft is rated 3.7 out of 5 by 18.
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  • Overview
  • Reviews (18)
  • Delivery
  • Returns

Make the most of your garden space by adding a stylish, practical and high-quality Helios Summerhouse.

With a fantastic curved roof, the Helios is a great looking product guaranteed to suit any garden. There are three sizes to choose from and come equipped with double doors with lock and key, styrene glazed windows and green mineral felt.

These are built using 12mm shiplap cladding, 12mm tongue and groove floor and roof for rigidity, stability and durability.

(Please note: Images are dressed and painted for display purposes only. All listed metric dimensions include the roof overhang.)

Features and Benefits

  • Durable – This sturdy and strong garden building is constructed from robust timber and joints giving you a long-lasting and resilient structure.
  • Decorate yourself – Paint, stain or leave it natural, this summer gives you the chance to customise it how you want.
  • Self-assembly – This is a two-person job but can be completed without any professional help needed. All assembly instructions are included.


  • 12mm Tongue and Groove Curved Roof
  • 12mm Tongue and Groove Floor
  • Green Mineral Felt
  • 12mm Shiplap Cladding
  • 44x28mm Framing
  • Contemporary Curved Roof
  • Double Door Lock and Key
  • Styrene Glazed Windows


10x8 - Premium Helios Summerhouse



Base Width




Base Depth


Ridge Height


Eave Height


Internal Width


Internal Depth


Internal Ridge Height


Internal Eave Height



12mm Shiplap

Floor & Roof

12mm Tongue + Groove

Bearer Direction

Front to Back

Door opening width(All dimensions in mm


Door opening height (All dimensions in mm)


Lock type

Mortice Lock


Water Based Dip Treatment


10 Year Anti Rot - Requires annual treatment with a high-quality preservative that weatherproofs and protects against rot

Reviews (18)
Rated 5 out of 5 by from Delighted Very pleased with my purchase of the Helios Summerhouse. So straightforward to put up and feels good quality. Comes with instructions but well worth watching the Youtube video before erecting as well.
Date published: 2021-09-29
Rated 4 out of 5 by from Great for the price paid Really happy with the finished product. Waited a few months for this to arrive and when it did we were a bit disappointed as there were a couple of defects on the parts such as splits in the wood where nails had been hammered incorrectly and a few loose parts. We managed to repair and tweak things ourselves to get the summer house built. Took pretty much 2 days for 3 people to build and paint the house and we are really happy with the end result.
Date published: 2021-09-05
Rated 5 out of 5 by from First class value ++ customer service Bought this as a basic summer house. For the price point very very pleased. Excellent screw's and hardware+ delivery+ customer service regards a small question. Certainly two persons to. Put up.. My friend spent £6k on his summer house. Wishes he saved the money and got this. It's a basic summer house. NOT a rolls Royce
Date published: 2021-08-31
Rated 5 out of 5 by from Looks amazing. I bought this in May and arrived in August. Long waiting time but worth the wait. Love sitting in my cosy shed on a summer evening.
Date published: 2021-08-28
Rated 5 out of 5 by from Great value for money ! Clearly I have had a better experience than some of the reviewers here. So far I cant really fault this summerhouse. It is a decent size and seems very solid for what I paid.. Definitely a 2 man job, ideally with an experienced "Joiner" as I did and it took around 4 hours to assemble. Once insulated and plasterboarded which I would recommend I will be using it as my garden office for many years to come !
Date published: 2021-08-23
Rated 2 out of 5 by from Helios summer house I ordered this product to erect myself. The wood quality is poor and the construction awful. I had to repair many joints and buy more wood to replace poor quality wood. I also had to hammer many of the nails in properly. Some of the nails had missed the wood and were sticking out inside and sharp. The back panels were different lengths so there was a hole at the back we bought extra wood to make it watertight. This was bought for my granddaughter and a joiner had to come and sort it out at expense to us. I wanted other outdoor buildings but will not be getting them from Robert Dyas.
Date published: 2021-08-21
Rated 3 out of 5 by from Poor instructions and rough finish The summerhouse shape is fantastic and matches the pictures on the website however the finish is really poor with rogue nails and I’ll-fitting parts. The instructions were also poor leaving us to modify as we progressed the build.
Date published: 2021-08-11
Rated 4 out of 5 by from Great price Very good summerhouse. Not difficult to assemble but it can take considerable time if there is no one to help you. Be prepared for a long DIY day!
Date published: 2021-07-28
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  • clientName_robertdyas
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Vendor Direct Products:

This product is delivered for FREE by our approved supplier on a Standard Delivery Service.

Please be aware that we currently cannot arrange for delivery of this product to the following postcodes: AB, FK, HS, IV, KA, KW, PA, PH, ZE, LL58-LL78, IM, TR, BT, PO30-41.



In the UK you have a legal right, under the Consumer Contracts Regulations June 2014, to cancel your order within fourteen (14) days following your receipt of the goods. Refunds for orders cancelled under the provisions of the Consumer Contracts Regulations will be processed in accordance with your legal rights.

You may not cancel orders for the following types of products:

  • Electrical/Technical products which have been unsealed
  • Customised or bespoke Products
  • Anything of a nature that for hygiene or associated health and safety - this includes the Outdoor Spas, Mattresses and Divan Sets
  • Fresh food

Under the Consumer Contracts Regulations June 2014 you have a duty to take reasonable care of Products whilst they are in your possession. You will receive a full refund of the purchase price of the Products.

This is not intended to be a full statement of your rights under the Consumer Contracts Regulations. Full details of your rights are available from your Local Authority’s Trading Standards Office.

How To Return A Product

If you wish to return your item to Robert Dyas, you can do so by the following method:

1. Request a Collection via Robert Dyas Customer Services

Contact our Customer Services team on 0333 103 6677 (Monday- Friday 08:00 - 17:00, Saturday 09:00 - 17:00, Sunday 09:00 - 17:00 - call charges may vary by network) or via email to: [email protected] who will be able to arrange a collection for your item with the supplier. Please ensure that you provide your order number when contacting customer services.

If you are returning the item under your 14 day right to cancel, then a collection charge will be applied:

  • Products < 20kg: £7.50
  • Products > 20kg: £30

If you are not at home when we try to collect we reserve the right to deduct from your refund or charge your credit card the direct costs to us of the failed return in accordance with the Consumer Protection (Distance Selling) Regulations 2000.