Browse All Tribes or choose a Tribe below:
By signing up I agree to Property Tribes Terms and Conditions
Already a PT member? Log In
Sign Up With Facebook, Twitter, or Google
By signing up, I agree to Property Tribes Terms and Conditions
Already a PT member? Log In
Don't have an account? Sign Up
To reset your password just enter the email address you registered with and we'll send you a link to access a new password.
Hopefully you have resolved this problem by now but I was interested to read the post and some of the replies.
I know both companies you have mentioned very well and both have longstanding reputations in their fields. A comment that compares damp surveyors with double glazing salesmen is harsh but not unfounded in some cases.
If a damp surveyor holds a relevant qualification; CSRT or CSSW which would have been issued on passing the industry recognised exams, he or she first and formeost has a legal duty of care to provide an honest appraisal to the issues you have instructed them to report on.
I have to disgaree with the opinion of 'heat exhange', aka heat recovery against the alternative of dehumidifeirs or not improving ventilation.
The description given to the proposal made by Envirovent is not quite an accurate portrayal. Their recommendation would have been to introduce mechanical ventilation, either heat recovery or positive input ventilation to achieve at least a half air change every hour. This process to be backed up by installing or upgrading the extract fans in the wet producing rooms such as kitchen, bathroom, utility room, etc. These measures reduce the level of relative humidity being created and keep them within acceptable paramteres of between 50 - 60% RH.
Heat recovery is not expensive, dearer or more expensive than dehumidification. Infact, it is the opposite. In simple terms the process of a heat recovery system is first an formeost to introduce fresh air to the areas it is introduced at the rate I have already mentioned. This is done 24/7. Humidistat sensors identify excessive levels of humidty and switch the unit into boost mode to extract the stale, moisture laden air and replace with fresh air from the outside. As the stale air is being extracted it goes over a heat transfer plate which captures as much as 90% of the energy of the warm air going out. (Energy efficiency levels range from 60 - 90% depending on the product). The running cost of such a unit depends on the number of times it goes into boost mode as obviously this is making the motors run faster but typical costs range from £15-£25 per year again, subject to the size of the unit, (single room, whole house, etc).
Without the need for insulation, dry lining, re-plastering heat recovery systems do, very efficiently, remediate condensation issues with the additional benefit of improving air quality which is a bonus to those affected by asthma, etc. Indeed, the measures of improving the thermal values to a property, insualtion, double glazing, secondry glazing can have a negative impact on air flow throught out and make a problem worse. Whilst such measures are important, they should balanced against provision for ventilation.
Local authorities and housing associations up and down the country are installing these products into flats and apartments with great results. Whole house systems do require ducting and as such, their sutiability for this reason needs to be explored given the nature of the property.
Dehums do provide a solution but I don't believe they are a permanent answer. I do not specify them as remedial process for condensation control.
The other mechanical ventilation process is Positive Input Ventilation, (PIV). This process takes air from the loft void or from an external point and forces into a central point either a landing or hallway. Yes this can be chilled air but there are products available with inline heaters which will deliver cooled air at approximately 10 degress centigrade. Because of the heater element these are dearer to run. The cost comparison is with a 40watt light bulb. The speed at which the fan works can be tempered against the temperature of the air it is introducing to reduce the 'chill' factor.
Heat Recovery Ventilation has Appendix Q SAP rated solutions to new builds, complies with building regulations and 2009 Part F approved document means of Ventilation.
All the best.
I had an Envirovent system fitted to one of my properties last year. It was cheap not but it came with a guarantee to solve the problem and I'm pleased to say that I will not be claiming on the guarantee.
I have no commercial relationship with the company, save for being a happy client of theirs obviously. I got a big discount for being an NLA member too, I saved more than the cost of being an NLA member so it's worth joining if only for that reason if you decide to use Envirovent.
Founder of Property118.comLatest headlines below:
Best way to advoid condensation.
Dont have tenants or kick them out in september and let them back in April.
I don't want to labour a point in regard of ventilation but this is a topic of high relevance to Landlords and property owners in general.
I'm not sure of the protocol on this platform for including links in a post so I won't but for those of you who are information 'junkies' and could do with a little night time reading there is a very useful 20 page pdf document prepared by the Energy Saving Trust in regard of Ventilation, the need to ventilate, the need to balance ventilation against thermal improvements and the options available to ventilate.
What I like about this document? It avoids jargon!
The search word reference: gpg268 energy efficient ventilation in dwellings pdf.
If you have difficulty locating the document email me and I will be happy to email the document to you.
Hope you find it to be useful.
For additional information, the Ecobuild event at the Excel arena March 20th - 22nd, will see a host of ventilation manufacturers demonstrating latest heat recovery technology. Ecobuild is now arguably the most well attended property based trade event and is well worth a visit.
(It's fine to post non-commercial links.)
http://www.brumhomes.co.uk / Facebook
Local to Birmingham/Solihull? Join our Facebook private rentals group:
Thats the one.