Pennine Timber and Damp have been trading for over 25 years, we are a family run business and undertake all types of works from small building conversions, and repairs, damp proofing, and timber repairs for wood rot and beetle infestation, etc., cavity wall tie replacement, further information on all the above can be found in detail further down our website.


It is usual practice for one of our surveyors to visit your property so that an inspection can be carried out, this will be followed with a written report detailing the problems found, the remedy and a quotation for the works recommended.  We charge a small reasonable fee for this service and the inspection fee paid is refunded, if we are asked to undertake the works recommended.


We are members of the P.C.A (Property Care Association (formely known as the B.W.P.D.A – British wood preserving and damp-proofing association), the GPIC (guarantee protection insurance company) and the FMB (federation of master builders).




Rising damp is caused by various reasons arising from the break down in the original damp proof course(dpc), Raised  external ground level defects in the over site etc., and the absence of a damp proof course in older properties.


The damp travels up the masonry which is porous by the means of capillary action carrying with it chlorides or nitrates which are commonly known as ground salts.



Installation of a gel base chemical for brick works and an Injection Mortar system for stone/rubble filled properties.


DRY ROT (Serpula Lacrymans)

Wood rotting fungi commonly know as Dry Rot.  This attacks timber in order to extract the food source to maintain its growth and the generation of spores.  The Growth can travel through masonry, run up cavities and spread throughout the property  and cause a lot of damage internally.


Cuboidal cracking to timbers makes the timbers weak and crumble when touched. Myceliam growth is also present which is a greyish hyplae strand which develops from the spore the colour can vary from grey to a pure white in wet conditions.  Red dust would also be present which are the spores from the fruiting board.



Remove affected timbers and replace with pre-treated timbers, expose growth and treatment of masonry is also required to kill off the growth.


WET ROT (Coniophora Puteana)

Wet rot is the most common of the rots, this attacks mainly the joist ends which bear into the damp masonry, this does not spread throughout the masonry and growth ceases when the moisture source is removed. Decayed joist ends also need replacing with pre-treated timbers, timbers which are not affected with decay can be treated with a wood type preservative etc.



The commonly used term for Wood boring insects is Woodworm attack, they lay their eggs on or in timbers and larvae bore through the wood leaving a network of tunnels, weakening and damaging the timber structure.


The most common noted in the UK are, common furniture beetle, wood boring weevil, death watch beetle and the house long horn beetle, this is mainly found the in the southern home counties.


Drawings of wood boring insects:-



Wood Boring insects most commonly known:-

1.      Common Furniture Beetle is the most responsible beetle for 76% per cent of damage caused to properties.

2.      Wood Boring Weevil is commonly associated with damp timbers and Wet Rot decay in the timbers

3.      Death Watch Beetle, this mainly attacks hardwood and causes damages by boring into old buildings like churches etc,.

4.      House Long Horn Beetle, this is most common to the mainly southern Home Counties.



A micro emulsion insecticidal formulation is applied by spray, brush or past and can be used to treat most attacks where timbers area heavily infested by Woodworm attack, where the timbers have become rotting due to the woodworm attack the timbers will have to be removed and replaced with new, a thorough survey of the building would have to have been carried out prior to specify the correct course of treatments.



In basement conversion or refurbishments, cavity drain membranes provide a better alternative to other forms of tanking works.  The internal cavity drain membrane works on the principle of allowing water to continue to penetrate the structure but control it in the air gap and divert it to a suitable point, floor and wall membranes can be used backed up with a suitable drainage system.  A comprehensive survey should be carried out so that the correct form of specification can be drawn up, not all basements are the same therefore each job will differ,






Condensation is caused by the build up of moisture in the air inside the dwelling, which is generated by the occupants going about their everyday domestic activities.  Condensation with the associated problems of mould growth, streaming windows and musty smells is all related to inadequately ventilated homes, in recent years as dwellings have become more air tight this has caused condensation to build up and worsen.



Ensure that bathrooms and kitchens have good working extractor fans, vented externally where possible, condensation control units for other areas can be installed into dwelling with a loft, dwellings without a loft such as flats etc, would have unique and versatile flat unit installed. Both units are competitively priced and the units are exceptionally quiet and cost less than a small light bulb to run when in operation.



Condensation build up to sub floor areas to ground floor and roof voids and blocked chimney are quite common today.

Action can be taken by introducing extra ventilation to the sub floor areas by installing extra air vents to improve ventilation to the sub floor  over site etc.,  Slate vents for roofs can be installed so ventilation is improved the roof void area.  Blocked chimneys need to have vents installed to areas where they have been covered over and vented.  Capping to chimney haunch or a vented cowl these stop condensation build up inside the chimney stack.



Wall tie failure is more commonly wide spread than people think, with over 2-3 million properties suffering from wall tie defects, the main cause been inadequate protection prior to the 1930’s when wall ties had not been galvanised.  The weight of galvanising was reduced between 1960 and the 1980’s, ties inserted into Black Ash mortar joints seem to have been attacked by a chemical reaction with the ties installed, the absence of  effective wall ties will result in the failure of the wall structure integrity,  more frequent inspection to external wall by house owner should be undertaken, symptoms to look out for would be horizontal cracking at regular intervals in the external mortar joints which is commonly known as lifting of the bricks, these can be seen even by an untrained eye, when carrying out a survey for wall tie failure a metal detector to locate the ties  will be used and an endoscope will then be inserted into the cavity and the ties  examined for failure, if cavity wall insulation is installed in the cavity then the mortar joint or a  brick will need to be removed so that a physical inspection can be undertaken to confirm the condition of the wall tie.


Where replacement is necessary new ties will be installed using a stainless steel wall tie, either mechanical or resin fixed to suit the type  and condition of the masonry involved, the old existing ties will be isolated around the tie using expanding foam and mortar will be replaced around the old tie.




 Where Butterfly ties are installed, these are left in situe, new ties will be installed using a stainless steel wall tie, either mechanical or resin fixed to suit the type and condition of the masonry involved.



Structural repairs can be undertaken, i.e., wall to wall straps, floor to wall straps, stitching bars to cracks in mortar beds fixed with a resin.  A structural engineers report will be required prior to works so costings can be obtained.



Small building works can be under taken, i.e., replacement of pointing works, guttering, roof repairs, doors intern and external, small joinery repairs etc,.



Bringing old types of properties up to today’s specification, small renovation works, for further information on this please either telephone, e-mail or fax our office.



Pennine Timber and Damp co Ltd have been trading for over 25 years in the remedial sector, guarantees for 30 years are issued for DPC remedial works, woodworm, wet rot and dry rot treatments.  A 25 year guarantee is issued on Cavity wall tie replacement.


INSURANCE BACKED GUARANTEES – G.P.I.C (Guarantee Protection Insurance Co)

Insurance backed guarantees are also available and run along side our company’s guarantees as an approved contractor under the G.P.I.C., a one of payment for insurance backed guarantees is required if this service is to be undertaken, for more information of this please do not hesitate to contact our office or alternatively contact the G.P.I.C. direct or visit their web site @



We hope you have found our website informative and helpful, if we can be of further assistance please do not hesistate to contact us on any of the following :-


Tel 01904 676 260    or    Freephone 0800 525 898


Fax 01904 676 144




Registered in England no 2626180 Prop Pennine Timber & Damp co Ltd

Vat Registration No 557 2669 07