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The Colt Anti Downdraught Chimney Cowl was first produced by Colt in 1931 and we are pleased to have this brilliant Cowl as part of our Chimney Cowl Product range. This product has stood the test of time and is still popular with many installers today as it has a proven track record of reducing downdraught. For optimum performance, position one of the corners of the Colt Cowl directly facing the prevailing wind.
Colt Anti Downdraught Chimney Cowl £69.99
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2 Reviews

The Best Black Spot Remover I have Used

Shield-IT Black Spot Remover will remove stubborn areas of Lichen and Algae from patios, paving and driveways made from natural stone, block paving and concrete.

Lichen, otherwise known as Black or White spot is one of the most difficult challenges but with Shield-IT Black Spot Remover, you can remove stubborn black spots in no time and have your patio, paving and driveway restored to look like new.

FREE Delivery on all Shield-IT Black Spot Remover from Chimney Cowl Products

In Stock

£58.33 £34.99


FREE Delivery on all Shield-IT Black Spot Remover

We'll happily pay for the delivery to your door on all Shield-IT Patio Black Spot Remover

Order securely online and we will dispatch your order with an immediate effect. This great offer will end today, please don’t miss out.


Shield-IT Black Spot Remover is our best selling product for the removal of Black Spot or White Spot and return your patio to new and we highly recommend.

Shield-IT Black Spot Remover removes stubborn areas of Lichen and Algae from patios, paving and driveways made from natural stone, block paving and concrete.

Lichen, otherwise known as Black or White spot is one of the most difficult challenges but with Shield-IT Black Spot Remover, you can remove stubborn black spots in no time and have your patio, paving and driveway restored to look like new.

This high performance treatment is formulated and proven to remove this unsightly and stubborn problem which regular paving cleaners and pressure washing cannot deal with.

Shield-IT Black Spot Remover, is designed to kill the spores and makes removal easy with a pressure washer or soft washing treatment.

Features and Benefits

Removes Black and White Spot Lichen
Safe to use on sensitive stone
Can be applied with a garden spray
Coverage: 25m2

Application and Directions for use:

Ready to use formulation.

Can be applied neat through plastic watering can or spray-able equipment. Apply directly to the surface to be treated and leave to soak in, product will begin to fizz as it gets to work.

Leave product on surface between 2-4 hours to allow time to work. When sufficient time has been allowed for the product to work, rinse off the area thoroughly. For best results use a pressure washer.

Repeat as necessary for badly effected areas.

We would always recommend testing Shield-IT Black Spot Remover, in a small inconspicuous area before using to ensure it is suitable and desired effect is achieved.

Ensure that the area to be treated is cleared of garden furniture and other items so that they are not in accidental contact with the product.

Ensure that all loose dirt and other physical debris is removed first by brushing prior to application. Product can be applied to slightly damp surfaces or dry surfaces.

Do not apply to surfaces where they are saturated from recent rainfall or if rain is due within the time period required to treat the surface.



2 reviews for Shield-IT Patio Black Spot Remover

Based on 2 reviews
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  1. admin


    Just wanted to say how thrilled I have been to have found Shield-It.

    Our main patio has been power washed every year but not the side passage or smaller patio area.

    However, the main patio (all areas 13 years old) has come up like new and we couldn’t be happier.
    Shield-It Couldn’t be easier to apply.

    Pour neat into a watering can with a rose and apply onto a DRY surface.

    Leave for minimum 2 hours and up to 4 hours. Rinse off with a power washer or garden hose on strongest power setting….and BINGO!

    Fabulous product and will make sure I definitely keep in stock. 10/10!

    Friends can’t believe the difference and have asked how they can get hold of it.

    Mrs Nelson-Smith

  2. Paul

    I have personally used Shield-IT Black Spot Remover and Shield-It Render Cleaner on my own house.

    The results are truly brilliant and looking forward to the summer months looking at our brilliant White House walls.

    Please get in touch via the “contact us section” and I will happily send you a picture.

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We have been working closely with our manufacturing team and our courier services and as ever thankful for their continued hard work.

Chimney Cowl Products is a family run business passionate about what we do. We have been selling our amazing range of Chimney Cowl Products for over 15+ years and we are very much looking forward to the next 15+ years.

The whole family is involved. My daughter at the age of 6 helping mum wrap and stick labels onto orders and my son helps dispatch orders at the local post office (I do my bit too, promise).

Our Delivery Service

We reap the rewards of the very best postal prices form our courier and always amazed how they can deliver over 95% of our orders from our doorstep to your doorstep in just 24 hours and in most cases for less than £10.

We are with you at every step and if you would like to take advantage of our great range of products, ordering online could not be easier. Please simply select your desired product, add it to your basket and follow our secure checkout procedure. Upon receipt of your order we will process with an immediate effect.

Best wishes

Chimney Cowl Products

COVID-19 Delivery Options

Hello, just an update in regards to our delivery services – we are dispatching our range of Chimney Cowls and Disused Chimney Caps from our warehouses to our customers throughout the UK and following all recommended safe working Government practices.

Our orders are dispatched safely and securely via our courier services and they have been providing an amazing service for not just ourselves but many thousands of business throughout the UK and we offer our sincere appreciation.

We have a a great delivery rate from our courier and it always amazes me how cost effective their professional service is from collection to door to door delivery.

If you wish to have your delivery put into a safe place or have any special delivery instructions we can happily accommodate this and please leave a message within the delivery section of the checkout process. We can then ensure that there is no personal interaction at any time with yourselves and our courier service.

Please take care and we look forward to dispatching your order.

Choosing the Correct Size

Its sometimes difficult to choose the correct size of Chimney Cowl. We have the perfect solution and can be done from ground level as well.

If you can accurately guess the size or width of the chimney pot from the floor you can order the right Cap or Cowl from Chimney Cowl Products. The good news is this is relatively easy once you know the rough size of a house brick and the thickness of the walls of a chimney pot.

Using either the naked eye or a set of binoculars get a ‘side on’ view of the chimney pot you wish to cap or fit a chimney cowl, then find a full sized brick nearest to the chosen pot as a reference, normally directly underneath.

Now imagine that the brick is placed on top of the chimney pot itself and make a mental note whether it would fit inside, hang over, or sit flush. It may sound silly but once you know that the width of an average UK house brick is 225mm ( 9″ ) for imperial or 215 ( 8 and half ” ) on a modern property, it provides a very accurate impromptu tape measure.

The other factor you may need is internal pot size, this can also be guessed quite accurately if you know the average thickness of a chimney pot is about 25mm ( 1″ ) , simply factor this in and you can work out most chimney pot width’s quite accurately.

If you have large decorative rolls on top of the pot, make an allowance for this by guessing, using a brick as your guide.
Chimney Cowl Products - Your family run business proudly capping the UK for over 15 years...
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