Fire not burning hot enough [Twin- Wall System]

If you have a rigid pipe system connected to your stove and it was installed before 2010 there is a good chance that the pipe exiting the roof is not long enough. This stops your stove from receiving the optimum amount of air to make it burn efficiently. Before you blame the stove and waste money on a new one, you may want to try extending the length of pipe above the roof. In order to do this though we will need to know the exact make and model of the twin wall rigid pipe system as they are not interchangable.

Give us a call on 01462 431910 to arrange a free survey or send us a message from our website :

Stove Output Calculator

Woodburner or open fire?

Sometimes people think that a fire is a fire and that woodburners’ are an unnecessary expense. So if you have a fireplace that is bricked up and you are trying to decide between a wood-stove (the expensive option) or an open-fire here are a few things to think about.

Open fire

  • Cheaper to install
  • Not guaranteed that the fire will draw well when complete. May need a gathering hood fitting inside the chimney.
  • Soot attacks the brickwork, leading to repair work,
  • Very prone to differing weather conditions, often goes into reverse sending smoke inside the house.
  • Only 15% efficient so burns through fuel about 5 times as fast.
  • More storage space needed for fuel and more deliveries
  • High emissions causing pollution

Wood or multi-fuel stove

  • More expensive to install than an open fire.
  • Good draw produced by lining the chimney, which also protects the brickwork.
  • Designed to work with door closed so no smoke inside the house.
  • Around 70 – 90% efficient so burns through less fuel
  • Less storage space needed for fuel and fewer deliveries
  • Low emissions causing pollution

Open fires have been around since the dawn of time. Why would log-burners have needed inventing unless they improved the original invention?


Open fire in Molly Malones Pub in Hitchin

Do I need an Anti-Downdraft Cowl?

Does your open fire have a weak draw of air whilst burning? Even after its just been swept? Do you you find that the air in your room is smokey when the fire is on? Do you find you only have these symptoms on odd occasions such as windy days? Chances are you need an Anti-downdraft cowl. There are many available for purchase so check with your chimney sweep before buying one.

Please note that anti-downdraft cowls are not designed to stop drafts coming down the chimney when the fire is not in use.


How can I get a discount on my installation?

If you can wait until Summer then we can offer you a discount as this is traditionally our quiet period. This year however, we are already fully booked until the end of July and can only fit in 4 more full installs before the busy season starts again in September.

Thus if you are a bargain hunter, now is the time to book in your survey. Give us a call, or drop us an email on to arrange.

Invicta Sedan S Woodburner for sale

One of our customers bought this wood burning stove but its a little bit too large for their fireplace/ chimney. The stove is brand new and has never been used. It cost £900, and they would really like £700 for it, but any sensible offers will be considered.

Please email us at if you are interested and why not book in a free survey for its installation also?

For sale, brand new woodburning stove

For more information and technical specs visit the Invicta website:

Do you accept credit cards

Unfortunately we have decided that we are no longer able to accept credit cards nor debit cards. This is because of the new legislation that stops us from adding the cost of the bank charges for processing the transaction to the bill. This on average is around £60 per customer, and would mean increasing all our prices at the quotation stage, for all our customers, regardless of how they are planning to pay, and also purchasing a hand held device that costs around £300.

In the last year only 2 customers have asked to pay by credit card and so for the time being, we would rather keep costs low and so ask that our customers pay by cash, cheque, bank transfer or PayM.

Need a good chimney sweep?

Our sister company Cleansweep Vac Services has been in the business for over 25 years and can bring a wealth of experience and expertise to your chimney and fireplace.

You can book a chimney sweep online at or over the phone on 01462 671555

There is even a loyalty card scheme starting up in September in which your 6th sweep is free.  Visit the Cleansweep website for more information.

How often should I sweep my chimney?

How much does a woodburner installation cost?

To be honest its hard to say, which is why we need to visit and take a look at what you already have, before quoting you for the job.

Each chimney stack is unique, even the house next door probably has a slightly different set up to yours and without taking a look at the age of the house, the height of the stack and its state of repair and the fireplace area it would be impossible to quote you accurately.

If you are thinking of buying a woodburner and having it installed, I would make sure that you have at least £1500 put aside (including VAT) and that you get quotations from HETAS registered installers, so that you make sure that you have a safe installation and can cut out the planning permission process. Contact GTD Installations to arrange a free site survey today.

How long will it take?

It depends on what you want done. A flexible liner install will be completed in under one day, a wood burner or solid fuel stove will take a whole day and installations also involving hearths, fireplaces and opening up a blocked off chimney may need 3 or 4 visits. If you require a new hearth, we will measure up one week before, so as to allow plenty of time for the stonemason to cut it to the size needed.

Answers to your woodburner and chimney sweeping questions. Contact us if you have a different question.