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50 years experience
Manufactured in Great Britain
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Grandmaster Curved Roof Verano Summerhouse

Free Anti-Rot Treatment - Guaranteed for 15 years*
  • Extra STRONG
  • UK Manufactured By Us
  • Multiple Design Options
  • Fully Pressure Treated*
  • Free UK Delivery*
  • Heavy-duty roof purlins
  • Upgrade to Glass Double Glazing
  • Assembly time is 4x faster than a log cabin!
  • Shatter Resistant Styrene Glazing
  • Contemporary Tongue and Groove Curved Roof

From £48.85 / month

For 10% discount use code MAY10
In stock
Mortice lock and lockable windows
Extra tall inside
Stronger and taller double doors
16mm cladding upgrade
15 year anti rot guarantee
Fully opening windows

Disclaimer : Painted buildings are for illustration purposes only. All buildings are in their standard or pressure treated colour upon delivery. A distance of 1m must be kept between the boundary and your building to allow access for annual treatment and to comply with the anti-rot guarantee*.

The Grandmaster Verano is a heavy-duty contemporary summerhouse with a curved roof that you can customise to your requirements.
Grandmaster Verano Infograph

What’s included?

  • All fixings and fittings
  • Easy to follow instructions
  • Pre-assembled panels, roof and floor
  • Extra high ridge and eaves height
  • Tall opening windows and fully glazed doors, styrene as standard
  • Opening side windows
  • Signature mineral felt
  • 15 year guarantee* with pressure treated panels
  • Mortice lock and lockable windows

Curved Tongue and Groove Roof with Heavy-duty Purlins

The Grandmaster Verano is a unique and contemporary garden building with a wide range of features. Its curved roof is certainly one of its most noticeable features and so we have given it extra strength where needed with heavy-duty purlins and trusses for increased rigidity. It is also constructed from pressure treated timber boards that are supplied in sections that fit together, making your roof easy and quick to assemble.

Hand Crafted

The Grandmaster Verano is built by our product assembly team using hand-selected graded Scandinavian slow grown timber at our facility in Nottinghamshire, on the cusp of Sherwood Forest. Developed and tested by our highly experienced team designers. Designed for multiple uses and to be able to be customised to your requirements, the Grandmaster Verano Summerhouse is a building that you can enjoy for many years.

Hand Crafted

Enjoy Panoramic Views of Your Garden

With opening windows on the side and front and fully glazed double summerhouse doors, you can be sure that plenty of light can enter your building. It can also be well ventilated and so you can enjoy the views of your garden in comfort and even in the colder months if you upgrade to our double glazing or UPVC option to lock in the temperature.

Window and Door Options

Our double glazing option is available with our timber windows which are 4mm toughened glass with a 6mm spacer for a total thickness of 14mm. If you wish to upgrade your windows and doors even further we offer domestic standard UPVC doors and windows which are double glazed with a total thickness of 28mm. They also come with multipoint locking for extra security.

Grandmaster Verano Quality Materials


Easy and strong tongue and groove construction

Our shiplap panels keep rainwater and other harsh elements from entering the building. This is primarily due to its construction where the panels closely interlock, leaving no space for water penetration and weather damage.

11mm shiplap

Tongue & groove


16mm shiplap

Tongue & groove



Grandmaster Curved Roof Verano Summerhouse

High-quality materials

We only use the very best materials for our garden buildings.

15-year anti-rot guarantee*

Our buildings are supplied pressure treated as standard to give your building increased protection from rot and decay, and increased longevity.

Longer lasting

Constructed from interlocking tongue and groove shiplap cladding to increase protection from the elements and increase building strength.

Thicker and doubled up framing

Constructed with 27mm x 44m framing that is doubled up where the panels join, for increased strength and rigidity.

Curved tongue and groove roof

For a summerhouse that really stands out from the crowd, with a contemporary curved roof design.

Extra tall and wide double summerhouse doors

Our double doors give you even better access to your building. Perfect for taller people to enter and for adding large furniture inside.

Extra tall interior

With a 2m internal eaves height and a 2.3m internal ridge height, there is plenty of headroom all around your building and space for those taller items.

Window and door options available

Our lockable windows and doors are supplied with styrene glazing as standard, where you can upgrade to our double glazing for all year round use.

Extra strong, roof purlins roof and trusses

Your building’s roof is supported by timber purlins that span the width of the building, giving it increased strength. We have also added extra trusses on the larger sizes for extra rigidity.

Flooring options available

Our 11mm tongue and groove floor is supplied as standard. Upgrade to our 19mm or 28mm thicknesses.

UPVC upgrade option available

For the ultimate security and increased u-values we off domestic standard double glazed windows and doors with multipoint locks and a choice of colours.

Roof covering options available

Black mineral felt is supplied as standard where we give you the choice to upgrade to our EPDM rubber roof covering for the ultimate protection and increased building longevity.

Multipurpose interior

With our upgrade options and multiple sizes to choose from, you can fully tailor your building for multiple uses, such as a summerhouse, office or home gym.

Multiple size options

For a cosy room to relax in your garden or a large space to entertain guests, the Grandmaster Verano is perfectly suited for your requirements.

Modular construction

Your building arrives flat packed in multiple sections which are designed to be easy to fix together and also fit through your door.

Easy self-assembly

Your building comes with easy to follow instructions in simple stages and with all of the fixtures and fixings required for assembly.

Select Size
Select Measurements
Overall Dimensions
Overall Width
Overall Depth
Width Internal
Depth Internal
Eaves & Ridge
Eaves Height Inc. Floor
Eaves Height Excl. Floor
Ridge Height Inc. Floor
Ridge Height Excl. Floor
Eaves Height Internal
Ridge Height Internal
Shed Type
Project Timber Range
Roof Style
Fixtures & Fittings
Cladding Style
Locking System
Interchangeable Windows
Basecoat Treatment
Pre-Assembled Side Panels
Select options
  • Size
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  • Wall Thickness
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  • Window Fixings
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  • Window and Glazing Material
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  • Floor
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  • Guttering
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  • Roof Cover
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  • Paint Colour
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  • Colour Trim
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  • Silicone Gun Set
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  • Padlock Protector
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  • Hasp and Staple
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  • Garden Building Toolkit
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  • Laminate Floor
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  • Base
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