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8’3 x 8’2 Mercia Wooden Combi Greenhouse

First Added - August 4 2022
Last Updated - August 4 2022 - 0 Data Points Updated - 63 Data Points Added
Reviewed & curated by a panel of garden building experts. Using methodology 1.1

Product ID: SKU: SI-001-005-0001

Size: 8' x 8'

Merchants Checked: 12

Available From: 3

Waltons
£1,499.99
See Deal
Sheds.co.uk
£1,269.00
See Deal
BuyShedsDirect
£1,329.00
See Deal

Support WhatShed: by making a purchase after clicking a link above, a portion of the sale supports this site.

85
Good Ranked in the Top 7% of Greenhouses.
Position 51 of 836 Greenhouses - Up 51 places from previous update.
Quality of materials
Construction quality
Ease of construction
Value for money

See how our panel of industry experts helped create the impartial judging criteria used to calculate the Expert Score.

Our verdict on the 8’3 x 8’2 Mercia Wooden Combi Greenhouse

The 8’3 x 8’2 Mercia Wooden Combi Greenhouse comes with an apex style roof; holds a 10 Years guarantee; is fit with lockable double doors that use a lock and key locking system; is treated using a dip treated process [1]; and makes use of made in the uk, certified sustainable materials. The windows window used on this particular 8′ x 8′ use a styrene [2] glazing material (Thickness was not specified).

Base material: wood

Our experts say this has 4 stand out features. A stand out feature is something found on over 70% of the top 10% of products in a particular category or is an exceptionally good feature as rated by our panel of experts.

1. The tongue & groove cladding used on this greenhouse is one the best available for greenhouses rated by our experts.

2. The tongue & groove construction like the one used on the roof of this greenhouse is rated one of the best by our panel of experts.

3. The mineral felt roof covering found on this greenhouse is rated to be one of the best by our experts.

4. Our experts say this the tongue & groove floor material used here is one of the best available on all greenhouses.

Below is a brief overview of how some of the key points of this greenhouse fairs across the market.

Cladding

The tongue & groove cladding(walls) used here is the best form of construction for greenhouse walls out of the 3 types [3] we’ve identified on same-size greenhouses, that you’ll also see getting used on 5% (40 of 787) of all greenhouses analysed [4], as well as being used on 12% (9 of 78) of the top 10% of greenhouses [5]. You’ll also find the tongue & groove cladding showing up on 5% of 8′ x 8′ greenhouses (3 in total) [6], and when taking the average Expert Score of those 8′ x 8′ greenhouses (83), the 8’3 x 8’2 Mercia Wooden Combi Greenhouse is just above the average with an Expert Score of 85.

Read full analysis for cladding.

Roofing

Tongue & groove is the cladding used for the roofing, our experts rate this the best form of roof material out of the 2 types we’ve found on same-size greenhouses [7]. This roofing material is used on 4% of all greenhouses analysed, and 3% of the top 10% of greenhouses. 5% of 8′ x 8′ greenhouses (3 in total) use tongue & groove construction for the roof, and when taking the average Expert Score of those 8′ x 8′ greenhouses (83), the 8’3 x 8’2 Mercia Wooden Combi Greenhouse is just above the average with an Expert Score of 85.

A 12mm thick roof boarding was used on this greenhouse which is one of the best thicknesses used for a roofing material out of 2 thicknesses identified on same-size greenhouses [8]. It’s used on 4% of all greenhouses and 3% of the top 10% of greenhouses. 5% of 8′ x 8′ greenhouses (3 in total) use a 12mm thick roof boarding, and when taking the average Expert Score of those 8′ x 8′ greenhouses (83), the 8’3 x 8’2 Mercia Wooden Combi Greenhouse is just above the average with an Expert Score of 85.

Mineral felt is used as the roof covering, and out of 2 types identified on same-size greenhouses [9], is said to be one of the best roof covering materials. It comes fitted on 1% of greenhouses and used on 1% of the top 10% of 8′ x 8′ greenhouses. 5% of 8′ x 8′ greenhouses (3 in total) make use of a mineral felt material as a roof covering, with this product having an Expert Score of 19% higher than the average.

Read full analysis for roofing.

Flooring

The manufactures of this greenhouse chose tongue & groove for the floor construction, we rate this the best form of floor construction out of 2 types found on same-size greenhouses [10]. This type of floor construction is used on 4% of all greenhouses we analysed, and 3% of the top 10% of those greenhouses. 5% of 8′ x 8′ greenhouses (3 in total) use tongue & groove construction for the floor. Additionally when taking the average Expert Score of those 8′ x 8′ greenhouses (83), the 8’3 x 8’2 Mercia Wooden Combi Greenhouse is just above the average with an Expert Score of 85.

A 12mm thick floor boarding is used here, this is one of the best floor board thicknesses according to our experts out of 3 found on same-size greenhouses [11]. It’s found on 4% of all greenhouses and used on 3% of the top 10% of greenhouses. 5% of 8′ x 8′ greenhouses (3 in total) use 12mm thick floor boarding, and when taking the average Expert Score of those 8′ x 8′ greenhouses (83), the 8’3 x 8’2 Mercia Wooden Combi Greenhouse is just above the average with an Expert Score of 85.

Read full analysis for flooring.

Window

Styrene windows come installed on this greenhouse. As a glazing option, we rate it the worst glazing types and is also the only type found on 8′ x 8′ greenhouses [12]. This particular type of glazing is used on 9% of all windowed greenhouses and 12% of the top 10% of greenhouses with windows we analysed. 10% of 8′ x 8′ greenhouses with windows (5 in total) use styrene windows, with this product having an Expert Score of 19% higher than the average.

Read full analysis for window.

Height

The height of this greenhouse is 2140mm (7′) which is 3% more than the average 8′ x 8′ greenhouse, giving you 60.0mm (0.2′) extra headroom.

Read full analysis for height.

Doors

The door height is 1,680.00mm (6′) tall which is 8% or 136.67mm (0.4′) shorter than the average 8′ x 8′.
The door width is 680.00mm (2′) wide which is 61% or 415.83mm (1′) narrower than the average 8′ x 8′.

Read full analysis for doors.

You Might Also Consider

We found 7 8′ x 8′ greenhouses with comparable specifications. The 8’3 x 8’2 Mercia Wooden Combi Greenhouse has an Expert Score that is 13% higher than average and is £92 less expensive than average. If you are looking for the best value or highest expert scoring greenhouses out of the 7 with comparable specifications the following might be of interest.

Best value – If you are looking for something comparable that costs less, then you could save £779 with this 8 x 8 Greenhouse in a Box. It is priced at £550, this is 142% less than this and has an Expert Score of 82, 2 points less than the 8’3 x 8’2 Mercia Wooden Combi Greenhouse.

The 8’3 x 8’2 Mercia Wooden Combi Greenhouse is the best scoring greenhouse available out of all 7 8′ x 8′ greenhouses we analysed.

High Wind Area – If you live in a particularly exposed or high wind area then having a greenhouse with a thicker cladding and higher than average frame thickness can be preferable. We found at least 3 greenhouses that have a combination of features that can make them more suited to higher wind areas.
Marlborough Greenhouses 10′ x 6′ Wooden Greenhouse with 4 windows
Marlborough Greenhouses 8′ x 8′ Wooden Greenhouse with 4 windows
10′ x 6′ Mercia Traditional Shiplap Wooden Apex Greenhouse Combi Shed

Coastal Consideration – If you live in a particularly wet or harsher environment such as by the coast then you might want to consider something with a more robust pressure treatment or something made from metal or plastic, both materials that are particularly suited to such harsh environments. We’ve found at least 3 greenhouses that have a combination of features that can make them more suited to higher wind areas.
6′ x 10′ Palram Canopia Harmony Grey Greenhouse
6′ x 10′ Palram Canopia Hybrid Grey Greenhouse
6′ x 10′ Palram Canopia Mythos Grey Greenhouse

Public-Facing – Extra security measures might be more of a concern if you’re placing your building in an area that is more public-facing than a garden. Features such as security windows or even having no windows at all, and the ability to lock all opening doors are usually much more important when you have something that is more public-facing. We found at least 3 greenhouses that have options that you might find a better fit if this is a concern you have.
8’x8′ Palram Canopia Bella Walk In Silver Aluminium Framed Greenhouse
8’x8′ Palram Canopia Glory Grey Walk In Polycarbonate Greenhouse
6×10 Palram Canopia Harmony Polycarbonate Green Greenhouse

More Child Friendly – If you have children and you are looking for something that has that little extra in terms of durability then tougher glazing options might be a better option. Here we have at least 3 other options that will fill those needs.
6′ x 10′ Palram Canopia Mythos Grey Greenhouse
6′ x 10′ Palram Canopia Harmony Grey Greenhouse
8’x8′ Palram Canopia Bella Walk In Silver Aluminium Framed Greenhouse

Product Details

Building Type
Greenhouses, Large Greenhouses, Wooden Greenhouses
Metric Size (Meters)
8' x 8'
Material
Wooden
Roof Style
Apex
Number of Windows
Has Windows
Door Type
Double Door
Cladding Type
Tongue & Groove
Treatment Type
Dip Treated
Guarantee
10 Years
Floor Material
Tongue & Groove
Floor Thickness (Imperial)
12mm
Floor Thickness (Metric)
12mm
Eaves Height (Imperial)
1860.0mm
Eaves Height (Metric)
1860.0mm
Persons To Assemble
2 people
Ridge Height (Imperial)
2140.0mm
Ridge Height (Metric)
2140.0mm
Framing Size
28mm x 28mm
Door Height (Imperial)
1680mm
Door Height (Metric)
1680mm
Door Width (Imperial)
680mm
Door Width (Metric)
680mm
Roof Material
Tongue & Groove
Roof Thickness (Imperial)
12mm
Roof Thickness (Metric)
12mm
Depth (Imperial)
8' 2"
Depth (Metric)
2.49m
Width (Imperial)
8' 2"
Width (Metric)
2.49m
Building Type
Potting Sheds
Anti-rot Guarantee
10 Years
Cladding Material
Shiplap Tongue and Groove
Metric Size (meters)
2.4 x 2.4
Under 2.5m Tall
Yes
Window Size (Metric)
nan x nan
Door Size (Imperial)
6' x 2'
Door Size (Metric)
1680mm x 680mm
Glazing Material
Styrene
Roof Covering
Mineral Felt
Internal Depth (Imperial)
7' 10"
Internal Depth (Metric)
238cm
Internal Width (Imperial)
3' 7" /4' 3"
Internal Width (Metric)
110cm/130cm
Opening Windows
1 Opening Window
Height (Imperial)
2140mm
Height (Metric)
2140mm
Framing Size (Imperial)
1 1/8" x 1 1/8"
Framing Size (Metric)
28mmx28mm
Accreditations
Made in the UK, Certified Sustainable
Locking System
Lock and Key
Assembly Time (estimated)
4-6 hours
Construction Type
Tongue and Groove
Recommended Construction Surface
Concrete or Paved Area (level)
Depth Including Overhang (Imperial)
8'
Depth Including Overhang (Metric)
2530.0mm
Width Including Overhang (Imperial)
8'
Width Including Overhang (Metric)
2500.0mm

Comparisons of Similar Sheds

10-x-8-pressure-treated-tongue-and-groove-greenhouse-super-strength-framing-rim-lock-4mm-toughened-glass-bench-free-install-L-8776375-39581696_14-x-6-pressure-treated-tongue-and-groove-greenhouse-super-strength-framing-rim-lock-4mm-toughened-glass-bench-free-install-L-8776375-39581672_1si-004-003-0001-44-x-8-pressure-treated-tongue-and-groove-greenhouse-super-strength-framing-rim-lock-4mm-toughened-glass-bench-free-install-L-8776375-39581646_18-x-6-pressure-treated-tongue-and-groove-greenhouse-super-strength-framing-rim-lock-4mm-toughened-glass-bench-free-install-L-8776375-39581655_1
Expert Score 8085838583
Price £5,423.11£4,552.90£659.00£4,719.92£4,954.32
Size 10' x 8'4' x 6'6' x 3'4' x 8'8' x 6'
Brand Marlborough GreenhousesMarlborough GreenhousesAdleyMarlborough GreenhousesMarlborough Greenhouses
Material WoodenWoodenWoodenWoodenWooden
Cladding Thickness 12mm12mm12mm12mm12mm
Guarantee 10 Years10 Years10 Years10 Years10 Years
GoGoGoGoGo
Joel Bird

Joel Bird

Profile

Our resident shed building expert Joel was the 2014 winner of Channel 4’s Amazing Spaces Shed of the Year having beat over 10,000 applicants to win. He returned to the show the following year as a judge. He is also the author of The Book of Shed and has designed & built over 50 small bespoke garden builds. Joel has appeared on various TV or Radio shows include George Clarkes Amazing Spaces, Alan Titchmarsh Love your Garden, Chris Evans Breakfast Show and BBC Radio 4’s Saturday Live.

Meet the experts

Sources

Merchants Checked

12 different sources were used to research information on this product, and 3 contained information that we were able to use to compile the data used on this page.

The following merchants were checked on the 06 August, 2022 to see if they stocked this product.

Waltons – 231 products checked, found 1 match.
Buy Sheds Direct – 1635 products checked, found 1 match.
sheds.co.uk – 1999 products checked, found 1 match.
Wickes – 19576 products checked, found no matches.
B&Q – 78905 products checked, found no matches.
ManoMano UK – 922302 products checked, found no matches.
Wilko.com – 21232 products checked, found no matches.
Homebase – 35509 products checked, found no matches.
BillyOh – 1244 products checked, found no matches.
Garden Buildings Direct – 1284 products checked, found no matches.
Shedstore – 1373 products checked, found no matches.
Tiger Sheds – 635 products checked, found no matches.


1. Dip Treated: Dip treating is a temporary protective base coat treatment that is mainly designed to help protect the building during transit and for around one month after it is assembled. This water-based treatment is the least time-consuming and cheapest type of wood treatment. It involves dipping the wood in a protective water-based preservative and then leaving it to dry. The action of dipping is where ‘dip treatment’ comes from.

A dip-treated garden building is not considered fully treated with wood preservatives; it’s vital to re-treat your dip-treated building, preferably with a solvent-based (or oil-based) wood treatment. Then re-treat it on an annual basis using a solvent-based (or oil-based) wood treatment.

If you don’t want to treat something on an annual basis then a pressure treated wooden building might be a better option, this is where the wood undergoes a process called tanalisation (pressure treatment) during production. This is where the timber is submerged in specialist wood preservatives (such as Tanalith E, this is actually the origin of the word ‘tanalisation’), the wood then goes into a high pressure vacuum tank to draw out excess moisture and air and force in the preservatives. This deep penetration of the exterior wood protects it from the elements and all forms of insect attack. Wood treated this way can last many years without being re-treated. The Wood Protection Association has a good article/video on this. 

2. Styrene (Polystyrene (High Impact) HIPS): Styrene as it is commonly known or High Impact Polystyrene (HIPS) is a very versatile form of plastic. It has a very wide range of uses but for garden buildings styrene is typically used as a budget option for windows.

Styrene is a shatter-resistant material, which is why it is ideal for situations where safety needs to be considered, such as playhouses. This benefit can be offset by a few other drawbacks, unfortunately styrene has a tendency to yellow over time (the technical term is Photoyellowing and it is caused by prolonged exposure to UV Light), the degradation of its polymers over time also causes it to become more brittle.

Another drawback of styrene is its thermal coefficient of expansion (it is 80 x 10-6), this is higher than most other glazing options. This means that as the material heats up and cools it can contract and expand more than other glazing options. This cycle can lead to a loose fit of windows over time.

According to data from the British Plastics Fedaration the physical properties of Styrene (Polystyrene (High Impact) are that it is not very good when exposed to high heat with a maximum continuous use temperature of between 60 to 80 °C. This is coupled with the fairly low range the Notched Impact Strength data shows of 10.0 – 20.0 Kj/m². 

3. Cladding types identified: shiplap tongue & groove, tongue & groove, wood 

4. Global cladding data sourced from: All tongue & groove greenhouses 

5. Top cladding data sourced from: Top 78 tongue & groove greenhouses 

6. 8′ x 8′ cladding data sourced from: 62 8′ x 8′ tongue & groove greenhouses 

7. Roof material types identified: styrene, tongue & groove 

8. Roof thickness types identified: 12mm 

9. Roof covering types identified: mineral felt, osb 

10. Floor material types identified: osb, tongue & groove 

11. Floor thickness types identified: 11mm, 12mm 

12. Glazing material types identified: styrene 

Product ID: SKU: SI-001-005-0001

Size: 8' x 8'

Merchants Checked: 12

Available From: 3

Waltons
£1,499.99
See Deal
Sheds.co.uk
£1,269.00
See Deal
BuyShedsDirect
£1,329.00
See Deal

Support WhatShed: by making a purchase after clicking a link above, a portion of the sale supports this site.