Call:0800 098 8877
Blog Help
Need help? 0800 098 8877
£50 off eligible orders · OCTOBER50 applied automatically over £1499

£50 off eligible orders

CodeOCTOBER50applied automatically over £1499
Rated 4.62/5 Excellent (4,092 Reviews) Excellent Reviews
Free UK Delivery Available
Professional Installation Available
Secure Shopping

Swallow Mallard Dwarf Wall Greenhouse

10% Off Swallow Oiled & Painted Buildings Includes eligible extras. Natural Thermowood buildings and their extras are excluded.
T-Shaped Design 8ft wide with perpendicular porch wing for extra space
Dwarf Wall Brick base holds heat overnight for longer growing seasons
Free Install Delivered and erected in your garden within 8-12 weeks
From £8,847 Pay just 20% deposit, balance after installation

The Swallow Mallard Dwarf Wall is our most popular 8ft wide T-shaped ThermoWood® greenhouse on a brick base. Choose from 6 sizes priced from £8,847 to £14,222. Every model includes 3mm toughened safety glass, automatic roof vents, full-length staging and free professional installation. The brick dwarf wall absorbs heat by day and releases it overnight. Built in Rotherham with a 12-year warranty.

Pay only 20% TODAY With Swallow Greenhouses

FREE Installation with Swallow Greenhouses!!

The Mallard Dwarf Wall is the model we fit most in this range. The 8ft width gives plenty of room for two rows of staging with a clear path between. Brickwork adds real thermal mass, and we see customers gaining weeks on their growing season.

For the standard floor-to-eaves glass version, see the Swallow Mallard. If you need a wider T-shaped dwarf wall, the Swallow Swan Dwarf Wall is 8ft 9in wide. For a narrower option, the Swallow Cygnet Dwarf Wall is 6ft 8in wide.

Products
  • Sizes:
  • Length:
  • Colour:
  • Type:

Need Help Choosing?

Which greenhouse? Compare glazing, sizes and styles to find your match. Buyer's guide Materials, sizing, glazing and prices explained. Installation Base prep, assembly and our professional fitting service.

Or call our team free on 0800 098 8877

T-Shaped Orangery 8ft gable width with separate porch zone
Dwarf Wall Base Brick base retains heat overnight for year-round growing
From £8,847 Free installation included in every price
ThermoWood Rot-free timber with 12-year manufacturer warranty

About our swallow mallard dwarf wall greenhouses

The Swallow Mallard Dwarf Wall Greenhouse is a T-shaped orangery with an 8ft gable width. It sits on a brick or block dwarf wall base, typically 600mm high. The wall retains heat overnight and adds structural stability. The T-shape design creates two distinct zones: a main growing area and a separate porch for potting and access.

We stock six sizes from the Swallow Mallard 8x11 Dwarf Wall to the expansive Swallow Mallard 8x32 Dwarf Wall. Prices start from £8,847. For the standard base version, see our Swallow Mallard Greenhouses. Browse our full Swallow Greenhouses range or explore other T-Shaped Wooden Greenhouses.

Why We Chose This Range

"The Mallard Dwarf Wall is our most popular T-shaped orangery on a brick base. The 8ft gable gives serious growing space. The dwarf wall holds heat so well that tomatoes grow three to four weeks longer into autumn. On a south-facing wall, the brick keeps internal temperature above freezing well into December."

-- Matt, Founder of Greenhouse Stores

Swallow mallard dwarf wall sizes and prices

ModelGable WidthLengthPrice (inc. Install)
Swallow Mallard 8x11 Dwarf Wall8ft11ft£8,847
Swallow Mallard 8x15 Dwarf Wall8ft15ft£9,919
Swallow Mallard 8x19 Dwarf Wall8ft19ft£10,996
Swallow Mallard 8x24 Dwarf Wall8ft24ft£12,070
Swallow Mallard 8x28 Dwarf Wall8ft28ft£13,147
Swallow Mallard 8x32 Dwarf Wall8ft32ft£14,222
Matt's Installation Tip: Coordinating Your Bricklayer

The T-shape base plan has exact measurements for the junction where the porch meets the main body. This is the area most bricklayers get wrong. Ask your bricklayer to build the straight sections first. Tackle the junction last when the corners are set. Allow three weeks for mortar to cure before our installation date. We supply the base plan with every order.

  • How much does a Swallow Mallard Dwarf Wall Greenhouse cost?

    Prices range from £8,847 to £14,222. Every price includes the ThermoWood frame, oiled finish, and 3mm toughened safety glass. Automatic roof vent openers, staging, and free installation are also included. Pay 20% deposit and the balance after installation.

  • What is the difference between the Mallard and the Cygnet Dwarf Wall?

    The Mallard has an 8ft gable width compared to the Cygnet's 6ft 8". This gives the Mallard significantly more internal space. The Mallard also has a wider range of lengths available (11ft to 32ft). Both share the same T-shape design, ThermoWood construction, and dwarf wall base option.

  • What wall specifications does the Mallard Dwarf Wall need?

    The dwarf wall is typically 600mm high with exact dimensions provided by Swallow. The wall must be perfectly level and square across the entire T-shape perimeter. Engineering bricks or standard house bricks both work well. The internal face can be rendered or left as exposed brick.

  • Can I add a painted finish to the Mallard Dwarf Wall?

    Yes, 10 factory paint colours are available. The oiled finish is standard. Popular paint choices include Bracken, Anthracite, and Lily White. Factory painting costs extra and is sprayed before delivery for a smooth, even finish. The paint protects against UV fading for 5-7 years.

  • How long does delivery and installation take?

    Delivery and installation takes 8-12 weeks from order. Your dwarf wall must be complete and cured before our team arrives. We give two to three weeks notice of the confirmed installation date. The team erects the full frame, glazing, staging, and fittings in one to two days depending on size.