Cheap lash up damp surveys, damp proofed x2 , cavity wall insulation x2, saturated walls....why?
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- Опубліковано 6 вер 2024
- Unfortunately when people pay for a non invasive survey, really they should expect extremely poor diagnosis.
Free, or cheap non invasive surveys can cost a fortune in the long run, as with this property.
This type of survey in reality isn't suitable for finding the root cause of damp, only a quote to mask it up. It is likely when the work starts you will also get hammered with extras, because the defects come to light. If you don't get hammered, it's likely they won't mention it to you. Cleaning the cavity, and cutting out floor and wall junctions, and anything to with bridging of the dpc, can get pretty expensive. Think also about the cwi guarantee is now not valid too. This property has a history of damp looking at previous repairs, and because these defects haven't been identified, and eliminated the cycle continues of poor diagnosis and continual damp.
Whilst im pro cavity wall insulation it is imperative a that a thorough investigation takes place prior to installation.
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I don't like to see concrete/flags right up to a house wall, unless there is a fall away from the building. I would hack that back and have a pea gravel trench next to the wall.
What is it with all those English houses with fundations below ground level? Doesn't this result in a common issue with damp? In my country the foundation always reaches at least 15 cm above groundlevel. That's a part of the building regulations. On top of the foundation is off course a moisture/radon barrier to prevent any moisture getting up into the cavity. So even if the drains gets blocked this will still not affect the cavity. Also there is a slope from the inner to the outer part of the wall that leads water towards the outside if needed
Hi Ross I’ve watched some of you your videos my wife got are wall insulated about 15 year ago and I’ve just noticed some damp patches on the gable end so I got the wall re-pointed still the same so I think watching what you have done there is what I’ll have to do take some brides out and have a look didn’t think of that nice one 👍
Check for dirty wall ties bud, or if it’s Round windows or below Calum’s be cavity tray issues. Have a look through some of me vids, and they might give you some ideas 👍
Hi Ross I think it’s 🤷♂️ bridging issue it’s must have been going on for some time so I’ve done what you have done in this video ,
Omg two bricks up from damp course solid full of old brick dripping of mortar in side the cavity is dry. so have managed to clean a lot out
In side the house the bonding & plaster is down to the floor so sorry for a long question do you think it’s an inside Issue? and not the outside Thanks, Wayne
@@completepreservationcan you put an air vent in to vent the cavity or would it cause other problems?
Cavity-walls that are already built up can NOT have cavity-wall insulation added.
Cavity-wall insulation can ONLY be installed from the very start of construction of the cavity-wall.
Cavity-walls must NOT be bridged with insulation(insulation touching the outer walls inside the cavity-wall), or else moisture will transmit from the damp outer wall, through the touching bridging insulation, and into the inner wall; making the inner wall damp inside the property.
If cavity-wall insulation is to be used, there must be a large air space gap in-between the face of the cavity-wall insulation panel and the outer wall inside the cavity-wall; this includes an air space gap in-between the face of the cavity-wall insulation panel and the cavity-wall tie drip-point(which must point downwards in the centre of the cavity).
Cavity-wall insulation must touch ONLY the inner wall inside the cavity-wall of course.
Ask City & Guilds N.V.Q. BRICKWORK teachers in person for PROOF of this.
You don’t like the bead then 🤷♂️
@@completepreservation I don't know what you mean exactly.
Bead insulation 👍
@@completepreservation Moisture from damp outer walls will wick across cavity into inner walls by capillary action.
Not with bead will it wick across 👍
I can vouch for this I opened up my caveat wall and guess what bridged thank you buddy good work
Glad to have helped you Daniel 👍👍👍 if you need any further advice give me a bell 👍
@@completepreservation thanks you were the only one to help me and I’m still very grateful for your help buddy
I've got roofers in and I can hear all the crap that they are chiseling away, tumbling down into the cavity. Should I be worried?
That looks like it's been pointed at some point, the cement is way too strong.
Certainly has bud, theres other issues also, but these aren't the cause of the issues within the video :)
Another good video. I was wondering how you reinstall the bricks in the cavity wall. Do you use mortar only, or slate and mortar, dry pack them with a specialist mortar or you own formula.
Thanks 👍 mortar only, but its a slow job as you need to keep the cavity clear. Otherwise back to square 1 👍
when you remove that soaking wet insulation do you then dry out the remaining one which is above this area? do you then reintroduce insulation back or just leave it free for air circulation?
Hi and needs to be dry if you want to insulate with cavity wall insulation bud 👍
ON the ball !
Does this mean that the blown cavity insulation has sucked up the damp from breached damp coarse ?
i would have a air brick put in to assist drying the brick and cavity insulation.
Thanks 👍 that insulation is like a sponge bud 👍 desiccant drying is how I dry these areas, super fast allowing normality quicker 👍
Bravo an other text book poor retro fitting example explained.
Thanks Alex… I certainly see plenty of these 👍