This makes 2 years I had a doubt (I had even already doing a subject here: Water repellent treatment of a ventilated crawl space? ) But I am now on and make sure that it is of External infiltrations and not the internal condensation.
How I so certain?
a) I noticed that the treatment against external moisture is a chemical treatment by polymerization and not a synthetic coating: it is therefore highly likely that it has cracked or cracked in different places!
b) the humidity has risen sharply following the recent heavy rains as we come out of a "dry" period of a few weeks. We even have a little puddle in the didou "wine cellar"!! 14
So there is therefore, I think, no restriction to doing an interior water repellent treatment because the excess moisture will either "come out" either not the bottom or not the cracks of the exterior treatment, but the walls will remain wet on the other hand. So one day or another, it will be necessary to treat from the outside (on the occasion of "big jobs" for example ...).
I have (and I will, work in progress) only treated the concrete blocks which were soaked (those at the bottom therefore), we will see the behavior of those which seemed dry: if there is too much "pressure" in the wall , they will also imbibe.
Anyway products used let the steam to escape by blocking humidity! So the walls can breathe all the same!
All this to say that I have the opportunity to make a COMPARATIVE TEST for econological 3 types of moisture treatment products walls I will apply to different parts of the crawl space:
From left to right: Super SikaLite, chemical coating for Rectavit basement (sorry the pot is dirty because I have already worked with and I thought not to do this "report") strongly solvent, Aquaplan "Filler for cellar" in powder!
Details of the products used:
a) Super SikaLite is an additive to conventional mortar tranformer hydraulic mortar (mortar waterproof so).
I had already used it to optimize our thermal buffer which is a concrete tank and which had a few "holes" on the upper slab).
The box costs € 5 and must be mixed with 2% by volume in the strike to make hyrdofuge: it is the most economical solution without cost, there is not even picture!
b) coating for cellar basely under Rectavit home. white coating. It is a prèt to use product with high solvent. Clean tools with White Spirit. I use this product or there is the wettest!
It is a chemical product, strongly solvent! It's a beautiful shit. I worked 1h30 with in the crawl space (without gas mask: don't say that one needs one !! Pfff) and I almost burst ("small" dizziness, persistent smell "in the nose" until next day ... well I did not stack but I think it was not far !!!)
Ca whore should be banned! (If I had known I will not come !!). Anyway as far as my contamination benefits other (or rather does not profit!): If you have a choice do not buy this crazy thing! It was felt throughout the house for more than 36h despite the ventilation!
The pot of € 5 55L costs and can handle 12m² (double layer required).
c) cellar plaster Aquaplan. It is a white powder already prepared mix 1 / 5 water around. I presume it is a hydraulic mortar already péparé simply and colorful to help pose!
The pot of € 10 39 kg costs and can handle 5 6 to envion m² (double slept well).
It therefore is more expensive than the hydraulic mortar prepared with SikaLite (I have not tested).
To follow: pictures of 1er results!
Small note: Sika and Aquaplan (and many others like Rubson ...) also have the chemical equivalent to Rectavit, this issue therefore is not intended to seal a brand or another but to help choose the best product!
One thing is certain Sika is a brand used by professionals in the sector. The others are more "consumer" products.
I cheat a little good is a dehumidifier that runs ... it will see if moisture quickly or not return. I put our 