damp proofing lower ground floor flat

The original property dates back to 1882. I also had the gutters repaired as one was leaking down and outside wall on a ground floor flat. we never turn away customers. Salts appear as white deposits but mould growth is rare. This damp occurs when the mortar and brickwork in a building soak up water from the ground. Where high ground levels or changes in ground level are present, such as lower ground floor flats, earth retaining walls, and many basements or garden flats, walls will require structural waterproofing. Reviewed in: February 2021. You may also notice white salts on the affected areas. Thanks for the two responses. Electricians Plumbers Handyman Builders Painters House Cleaning. The Freeholder or Leaseholder? Damp proofing concrete slab. Ground bearing floor construction comprising: 150 mm hard core sub base, 50 mm sand blinding, 2 mm DPM, 75 mm rigid insulation board and 150 mm in situ concrete slab. The product … Decayed skirting boards. With 19 New York Times Bestsellers and 3 literary Guinness World Record Titles including 'Most Published Author,' he is one of the most prolific writers of his time. Typical property's that require structural waterproofing or tanking using Triton TT55 Tanking system are, lower ground floor flats, basements flats, garden flats, internal facing earth retaining walls and many houses and flats with cellars.These walls and solid floors will require a negitve pressure structural waterproofing system, which is designed to withstanding external water pressure … The DPM should be lapped on to the damp proof course in the external walls and, if relevant, internal walls around the floor. Where we have permission, floor boards may also be lifted where possible to examine the sub floor void and the condition of the timbers. Semi rigid materials like mastic asphalt. A DPC means a damp proof course - its a roll of black plastic that goes in walls. The DPM means damp proof membrane - its a wide sheet of plastic that typically goes under a concrete pour. In such case the DPC is laid over the entire area of ground floor including wall thickness. I obtained 3 damp proof surveyors . By simply lowering external ground levels, this will allow wall base evaporation, to help control rising dampness. Generally, damp proofing keeps moisture out of a building, where vapor barriers keep interior moisture from getting into walls. The lease does not mention a damp course. Cost of damaging chemicals to date £30,000 further £37,000 recommended This isn’t rising damp, but can often be mistaken for it, if water has been slowly seeping out from behind an appliance and working its way behind units or under wooden flooring. 50 mm PIR slab insulation to perimeter, to link with similar insulation to inside of timber frame walls above. A damp-proofing “specialist” misdiagnosed the problem as rising damp and quoted over £6000 to inject a chemical into the wall to stop the urine soaking up the walls. Am considering buying a basement flat/ lower ground flat in SW6 (fulham). Formation of salts wall surfaces. Find out more about structural waterproofing, here: https://bit.ly/2JEGlEX Our client was not convinced that there was any rising damp as the house … Plumbing. Flats – floors . If you don’t have any leaks or rising damp issues, then the problem is almost certainly condensation. The surveyor will then correctly diagnose the damp problem whether its rising damp, high ground level or penetrating dampness. This barrier is intended to stop moisture passing from one to the other. High ground levels can lead to damp penetration where external ground levels are allowed to build up until it is at the same level or higher than the internal floor. A concrete floor inside a building to replace an older breathable floor means ground moisture is forced out to the walls, increasing the damp within the walls. _____ 5. It could go under a solid concrete floor, up a retaining wall and perhaps, rather confusingly, could actually be incorporated as the DPC itself. The damp surveyor will then enter the house or property and test all of the ground floor walls using an electronic moisture meter (damp meter). Labour and Materials Call. Using his array of gadgets Simon left no stone unturned. This damp occurs when there is a failure or absence of a damp-proof course. Typical property's that require structural waterproofing or tanking using Triton TT55 Tanking system are, lower ground floor flats, basements flats, garden flats, internal facing earth retaining walls and many houses and flats with cellars.These walls and solid floors will require a negitve pressure structural waterproofing system, which is designed to withstanding external water pressure … • The surface of the slab should be smooth, flat and free from projections. A suitable gauge damp proof membrane (DPM) and thermal insulation must be provided. This is probably the most effective and common form of damp-proofing treatment used by Damp Protection Services Limited when controlling rising damp in many homes and is considered to be the most cost effective method … A ‘spread-out’ damp area at low level may indicate that the DPC has been ‘bridged’ by raising the level of external pavings or soil, which allows groundwater to bypass the DPC and enter the wall above it. A concrete floor inside a building to replace an older breathable floor means ground moisture is forced out to the walls, increasing the damp within the walls. The issue seems to be in three different places front, back, and the bathroom. There are many signs of rising damp, peeling wallpaper and mould growth are obvious indicators, however you might also notice rot in timber, wet skirting boards or damp looking exterior brick or stonework. It was a perceived treatment for wall base damp long before retrofit chemical injection became heavily marketed. He was able to fit our appointment in at short notice and, upon arrival, proceeded to spend 2-hours reviewing the property from top to bottom, focusing on the lower-ground floor issue while also providing recommendations around the house. damp proof course; lowering ground; Jogey New Member. 07562719091 100mm Concrete Slab. Download a template for a chasing letter to repair – action required by landlord To run for a week to completely dry the 1 bed flat out. Damp Surveys – problem damp in lower ground floor flat. If you live in a flat above ground level, you won’t have to deal with rising damp. Internally, ground floor walls are profiled for signs of dampness. These can be laid over the sand blinding or on top of the concrete. Asking a damp proof company to check the situation and provide an estimate for any work is the best route forward and the only one if a retention is involved. The damp-proof membranes used during construction of concrete floors are often thin, and can easily become torn before they are laid, rendering them ineffective. External ground levels ideally need to be lowered 150mm below the damp proof course – or the internal flooring. In the past couple of years we have had an increasing problem with damp, throughout the whole flat but particularly on the bottom floor. We got someone round to look at it recently, and it transpired that there is no damp-proofing or tanking in the flat. Hi all, I am a newbie to building. Hiring a Tradie During COVID-19 : Learn more Directory Articles Cost Guide Homes. Lower ground floor kitchens, basement flats, high occupancy causing condensation and various other issues. It has access to a 50ft shared garden with the flat above. • Provide a flexible sealant between the skirting and the floor finish to limit air leakage. ground or roof. In many cases, your landlord is responsible for dealing with rising damp. Older buildings used a range of materials for a DPC, including slate, bitumen, jute and hessian. There is currently no damp course but rising damp problems. Damp Proofing in Midlothian. Simon came round to address a case of lower-ground floor damp. I currently rent nearby so know the area quite well and like it. 07441442473. I notice you seem to get more for your money with the basement/ lower ground flats. In accordance with BRE Good Building Guide 28 Part 1 (Domestic floors: construction insulation and damp –proofing), irregularities should not exceed 5 mm when measured with a 3 metre straight edge. Damp proofing is defined by the American Society for Testing and Materials (ASTM) as a material that resists the passage of water with no hydrostatic pressure. the 1970’s. January 29, 2013/0 Comments/in blog, timber & damp experts /by Annabelle. I am more after pros/cons of lower ground floor flats specifically - stories around extra damp, bugs/ants in the summer, vermin etc. Cold, damp surfaces and mould growth in the external corners of ground-floor rooms. A suitable gauge damp proof membrane (DPM) and thermal insulation must be provided. We are a long-standing company of high regard and provide the high standards one would expect from the leading damp proofing and timber treatments Hammersmith Damp Proofing & Timber Treatment.