Grandmaster “Heavy Duty” D1000 Pent Shed Windowless – Pressure Treated Tongue and Groove

1. Choose Your Size.

20 x 10
18 x 10
16 x 10
14 x 10
12 x 10

2. Treatment. FREE Pressure Treatment as standard worth XXXX

Delivery from,   Aug, 21st Wed

The size you have selected is

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In Stock

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What are our finance options?

Our finance is done through Specialist Lending Limited trading as Duologi. Simply proceed to the checkout as normal, then select the Humm Option and select your repayment period and deposit amount. Then, after placing your order, you will be redirected to the Humm website to complete the application.

If you have any further questions about our finance options, or are having any difficulties filling in the application, feel free to give us a call on 01777 593014 and we will do everything we can to help you.

Is planning permission required for having this outdoor building in our garden?

Typically, you won’t have to worry about seeking planning permission, and our buildings are designed to stay under a total height of 2.5m and fall under the category of ‘permitted developments,’ therefore planning permission is not required.

However, it’s always a good idea to check with your local authority if the following guidelines apply:

  • The garden building should not be used as self-contained accommodation.
  • Additional regulations apply to areas of interest, such as national parks or listed buildings.

For more information, please refer to the government Planning Portal.

Please note: We do not offer legal advice and it is essential that you seek independent advice or speak to your local planning authority for guidance before placing your order.

Is a base needed?

It is essential that all garden buildings are assembled on a foundation that is both solid and level. This will ensure that the construction of your building goes smoothly and will prevent issues, as all our buildings are designed to be assembled on a completely level base.

If you would like any assistance with creating a base for your building, feel free to contact us or see our Base Guide for more information. Assembling on an unsuitable foundation may invalidate your warranty, so let us know if you have any questions about this.

We also have our specially designed Eze Base, which provides a solid and level foundation for our garden rooms and offices with minimal groundwork required. Please let us know if this would be something you are interested in and we will see if it is possible to add this to your order.

Delivery Time

At Project Timber, we aim to provide swift delivery service, especially for garden sheds and summerhouses, which typically arrive within 24 to 48 hours after purchase. During checkout, you can select your preferred delivery date. For our grandmaster and insulated buildings, delivery generally takes between 2 to 4 weeks. Additionally, most postcodes qualify for free delivery.

Our kerbside delivery ensures easy access to your building via lorry or van. Please ensure there’s access in front of your house on the delivery date.

To learn more, please visit our delivery page at