Aftercare guide
Sheds
For a Shed to last a lifetime, it needs some care and attention. This guide provides everything you need to get the very best from your investment.
To maximise the life, health and usage of your shed follow these steps...

Painting Your Shed

Your Shed will arrive with a base coat of Sadolin. To fully protect your building, you must give it a second coat. You should do this around 3 weeks after installation to allow for any settling or movement. You can also hire a professional to do this for you.
A tin of Sadolin SuperDec paint on a wooden deck.
What is Sadolin?
Our only choice for our Sheds is Sadolin Super Dec or Sadolin Quick Dry. These microporous water-based paints allow your building to breathe while protecting it from moisture, insects and fungi.
Where can I buy Sadolin?

Sadolin is only available from registered stockists. Our closest supplier is Bannerman’s Colour Studio in either Perth or Dundee. 

You can also buy Sadolin online at Decorating Warehouse. A full list of retail stockists is available here.

The name of the colour you chose is on your order form and final invoice.

Featured Friends - Who do we recommend for painting your G&M building - blog feature image
Do I have to paint the inside of my shed?

This is down to your individual preference - you can leave your Shed unpainted.

If you want to paint the inside of your Shed, we recommend Sadolin diluted with water at a ratio of 2:1.

DO NOT use varnish, as this traps moisture and causes the timber to blacken.

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Painting shed doors
Moisture can cause movement in timber. To prevent your door from sticking or shifting, make sure that the entire door is thoroughly coated with paint - front, back, and all around the edges.
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How do I fix Shed doors that won’t open or close?

If your doors have moved so much that you can’t close or open them, there is a straightforward carpentry method to rectify them.

We offer a service to do this at our hourly rate. Alternatively, any reputable joiner will be able to carry out the work. We do not advise adjusting the doors if there's movement or sticking as it does more damage than good.

How often should I repaint my shed?

Fully repaint your Shed every 3-5 years. This will depend both on your location and on how much bad weather your Shed deals with.  A coastal Shed regularly battered by 100mph winds will need a new coat of paint sooner than a Shed sheltered in a garden. 

If you see any fading or signs of wear and tear to the finish, it’s time for a coat of paint.

Why do I have to paint my shed?

Because timber is porous it needs an additional layer of protection from moisture. Each coat of Sadolin adds more years of protection to your Shed by minimising the risk of water ingress. 

Without a coat of paint, the timber would easily absorb any moisture in the air, which would then transfer to the inside of the building. 

The Kindrogan
Polyhedron phenomenon
Image

The Kindrogan is a pyramid roof on a Rannoch body, a hybrid design to give you the best of both worlds.

Much like The Rannoch, The Kindrogan Garden Room gives you the versatility of the square/rectangular room for the best use of space whilst having the extra finesse of the shaped roof - which comes with the Isola shingles as standard.

Shape & Style
ImageImage
Sizes & Pricing
Size (ft)
Price
8'
x
8'
2.4m
x
2.4m
£11,247
10'
x
8'
2.7m
x
2.7m
£12,747
10'
x
10'
3m
x
3m
£13,797
Prices include VAT, delivery and assembly within 40 miles of Errol
enquire about this designSpeak to our team
The Deuchny
Five sides of wonder
Image

A shaped goddess comprising of a five-sided roof with an angled corner back, perfect for gardens with limited space. The Deuchny’s pitch comes together in the centre creating an outstanding focal point.

Her roof is Isola shingles which is beautiful, sustainable and replicates the traditional slate roof for that extra bit of flair.

Shape & Style
ImageImage
Sizes & Pricing
Size (ft)
Price
8'
x
8'
2.4m
x
2.4m
£11,247
9'
x
9'
2.7m
x
2.7m
£12,747
10'
x
10'
3m
x
3m
£13,797
Prices include VAT, delivery and assembly within 40 miles of Errol
enquire about this designSpeak to our team

Ventilation & Moisture Prevention

Your Gillies & Mackay Shed is single-skinned, with only one layer of timber cladding between the outside and inside of the building.

Because of this, small amounts of moisture can penetrate the walls during excessively wet weather. In a well-painted building, this happens very slowly. But in sustained wet weather moisture can build up inside your Shed. This leads to mould and can damage the building and its contents.

The easiest way to prevent this is to ventilate your Shed regularly.

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How Do I Ventilate My Shed?

From 2024, each G&M Shed is fitted with louvre vents that aid the ventilation of your building. This will help with moisture build up, but in extreme wet weather conditions, you will need to assist. There’s no special equipment required to ventilate your Shed - just open the windows and doors and get some air into the building.

On a dry day, open up the windows and doors and leave these open for a couple of hours.

Ventilation is essential during the colder, wetter months when it seems difficult to find any dry days. Keep an eye out for opportunities to ventilate your Shed as this is when it needs it most.

How do I prevent moisture in my shed?
If the weather is extremely wet, you can add moisture traps to your Shed. These are small containers with desiccant inside that collect any moisture in the air. If your Shed has electricity you can also use a powered dehumidifier.
What happens if moisture gets into my Shed?
The most common moisture-related problem is mould. While mould spores are present in the air and on many surfaces, they only cause problems if the conditions are right for them to take root and grow. Dark, damp enclosed spaces are ideal for mould overgrowth.
What can I do if my shed has mould inside?
Bleach can reduce the visible signs of mould, but it won’t remove the fungi that cause the problem. The best ways to prevent mould overgrowth are regular ventilation and reducing the moisture inside the building.
How do I prevent mould in my Shed?
The simple solution is to keep your Shed dry and well-ventilated. Prevention is so much more effective than treating mould overgrowth. Your Gillies & Mackay Shed is treated with an anti-fungal solution before it leaves our workshop, and by painting and ventilating your building, you avoid the conditions that allow mould to flourish.
The Kindrogan
Polyhedron phenomenon
Image

The Kindrogan is a pyramid roof on a Rannoch body, a hybrid design to give you the best of both worlds.

Much like The Rannoch, The Kindrogan Garden Room gives you the versatility of the square/rectangular room for the best use of space whilst having the extra finesse of the shaped roof - which comes with the Isola shingles as standard.

Shape & Style
ImageImage
Sizes & Pricing
Size (ft)
Price
8'
x
8'
2.4m
x
2.4m
£11,247
10'
x
8'
2.7m
x
2.7m
£12,747
10'
x
10'
3m
x
3m
£13,797
Prices include VAT, delivery and assembly within 40 miles of Errol
enquire about this designSpeak to our team
The Deuchny
Five sides of wonder
Image

A shaped goddess comprising of a five-sided roof with an angled corner back, perfect for gardens with limited space. The Deuchny’s pitch comes together in the centre creating an outstanding focal point.

Her roof is Isola shingles which is beautiful, sustainable and replicates the traditional slate roof for that extra bit of flair.

Shape & Style
ImageImage
Sizes & Pricing
Size (ft)
Price
8'
x
8'
2.4m
x
2.4m
£11,247
9'
x
9'
2.7m
x
2.7m
£12,747
10'
x
10'
3m
x
3m
£13,797
Prices include VAT, delivery and assembly within 40 miles of Errol
enquire about this designSpeak to our team

Roofs & Guttering

Your Shed comes with maintenance-free steel box profile roofing. This is guaranteed for 20 years, and won’t need replacing for at least 30 years. Your Shed will receive plenty of rainwater washes, but if you prefer you can wash your Shed roof with soap and water.

If you have opted for guttering on your Shed, make sure to check this twice yearly and clean out any leaves or blockages. More regular checks may be necessary if there are overhanging trees above the building. Avoid blockages such as leaves or moss to ensure that water is moved away from the Shed effectively.

Image
Cleaning and maintenance

Your summerhouse will receive plenty of rainwater washes, but if you prefer you can wash your summerhouse roof with soap and water.

More regular checks may be necessary if there are overhanging trees above the building. Avoid blockages such as leaves or moss to ensure that water is moved away from your summerhouse effectively.

The Kindrogan
Polyhedron phenomenon
Image

The Kindrogan is a pyramid roof on a Rannoch body, a hybrid design to give you the best of both worlds.

Much like The Rannoch, The Kindrogan Garden Room gives you the versatility of the square/rectangular room for the best use of space whilst having the extra finesse of the shaped roof - which comes with the Isola shingles as standard.

Shape & Style
ImageImage
Sizes & Pricing
Size (ft)
Price
8'
x
8'
2.4m
x
2.4m
£11,247
10'
x
8'
2.7m
x
2.7m
£12,747
10'
x
10'
3m
x
3m
£13,797
Prices include VAT, delivery and assembly within 40 miles of Errol
enquire about this designSpeak to our team
The Deuchny
Five sides of wonder
Image

A shaped goddess comprising of a five-sided roof with an angled corner back, perfect for gardens with limited space. The Deuchny’s pitch comes together in the centre creating an outstanding focal point.

Her roof is Isola shingles which is beautiful, sustainable and replicates the traditional slate roof for that extra bit of flair.

Shape & Style
ImageImage
Sizes & Pricing
Size (ft)
Price
8'
x
8'
2.4m
x
2.4m
£11,247
9'
x
9'
2.7m
x
2.7m
£12,747
10'
x
10'
3m
x
3m
£13,797
Prices include VAT, delivery and assembly within 40 miles of Errol
enquire about this designSpeak to our team

Summary

Along with the guidance above – if you follow this rough timeline you'll keep your Shed in tip top condition:
3 weeks after delivery:
Apply a second coat of paint to protect your shed from the weather.
Fortnightly:
On a dry day, open your Shed’s doors and windows and ventilate the building for 2-4 hours.
After 2 or more consecutive rainy days:
Open your Shed’s windows and doors and ventilate the building for 2-6 hours.
In September:
Inspect your Shed to check for any water ingress, wear and tear and signs of mould.
September-April:
Add moisture traps to collect any excess moisture. Remember to empty these regularly.

FAQs

Can I add window boxes to my Shed?
It’s not a good idea to add things to the outside of your Shed, especially things like window boxes or trellises. These encourage plant growth which causes localised moisture spots. Over time, constant moisture exposure in one area of your building could cause rot.
Will garden maintenance affect my Shed?
Keep the area around the base of your building free from weeds and tall grass. These can conduct moisture to the wall panels. Please prune overhanging trees and shrubs regularly to avoid abrasion to the building.
Will my Shed’s contents affect its performance?
Dust and mould can accumulate if the building is crammed full with no spaces for air to circulate. Using shelves and storage containers ensures that there is airflow throughout the inside of the building.
What about wet items?
Any wet items in your Shed bring moisture into the building. If this moisture can’t escape it can condense on the walls, roof or other items. Protect your Shed contents by wiping off excess moisture from wet items before storing them inside.
Is there anything I shouldn’t store in my shed?

Perishable items like paper and fabric don’t do well in a single-skinned shed. They’ll soak up any moisture in the air and are hugely susceptible to mould.

If you have any of these items in your shed, store them in plastic boxes with lids, and check them regularly for any signs of mould or moisture.

The Kindrogan
Polyhedron phenomenon
Image

The Kindrogan is a pyramid roof on a Rannoch body, a hybrid design to give you the best of both worlds.

Much like The Rannoch, The Kindrogan Garden Room gives you the versatility of the square/rectangular room for the best use of space whilst having the extra finesse of the shaped roof - which comes with the Isola shingles as standard.

Shape & Style
ImageImage
Sizes & Pricing
Size (ft)
Price
8'
x
8'
2.4m
x
2.4m
£11,247
10'
x
8'
2.7m
x
2.7m
£12,747
10'
x
10'
3m
x
3m
£13,797
Prices include VAT, delivery and assembly within 40 miles of Errol
enquire about this designSpeak to our team
The Deuchny
Five sides of wonder
Image

A shaped goddess comprising of a five-sided roof with an angled corner back, perfect for gardens with limited space. The Deuchny’s pitch comes together in the centre creating an outstanding focal point.

Her roof is Isola shingles which is beautiful, sustainable and replicates the traditional slate roof for that extra bit of flair.

Shape & Style
ImageImage
Sizes & Pricing
Size (ft)
Price
8'
x
8'
2.4m
x
2.4m
£11,247
9'
x
9'
2.7m
x
2.7m
£12,747
10'
x
10'
3m
x
3m
£13,797
Prices include VAT, delivery and assembly within 40 miles of Errol
enquire about this designSpeak to our team