Foundation types and construction

Information on types of foundation & construction

3 main types of foundation


Slabe on grade videos

Stego wrap featured in this video is $454.50 per roll. A roll is 14ft  x 210ft. This is 4.26m x 64m. So for a 7m x 9m home 1 roll would do it.



Appears to be what I’m after, but why not fill with stones to lower cement costs?


Insulated slab

Insulating beneath a concrete slab



Leyroy Merlin information on foundations

Good how to foundation link

Floor insulation

A good video on youtube about how to insulate a floor. 

Insulation a floor
( Poser un plancher isolant thermique)

Website to calculate how much 100mm flooring I need.

Calculation

Shopping list

The price here comes in at about 50 euro/m sq = 3150 euro


Alternative cheaper product

Recticel
Bricodepot.fr

This is Recticel FitForAll and here it’s sold in 30mm and 60mm sheets. But they are available up to 100mm (30mm, 40mm, 60mm, 82mm & 100mm) according to the Recticel Site 
Lambda 0.023

This would result in a cost of 945 Euros for 7m x 9m (15 euro TTC / m sq) 60mm sheets


From the following site, 100mm sheets are available for 28 euro / m sq (= 1764 euro for 7m x 9m)
https://thyez.entrepot-du-bricolage.fr/pr-dalle-isolante-polyurethane-fitforall-120×60-cm-epaisseur-100-mm-recticel-matc09-963844,31224,29,444.htm


Celotex

GA4090 ( 1 304,52 € for 69.12m sq ) 90mm sheets 
Lambda 0.022 Watts per mK
R value  4.05

http://www.isolation-pas-cher.com/catalog/category/view/s/isolation-plancher/id/17/?cat=135


Wood Fiber General

Not too good really, 4cm
R value 1.05

James

Wood Fiber Pavaflex Confort

Conductivité thermique : 0,038 W/(mK)
100 mm : R = 2,60 m².K/W
180 mm : R = 4,70 m².K/W
200 mm : R = 5,25 m².K/W

materiaux-naturels.fr
180mm boards are 18.75 Euro/m sq = 1181 euro for 63 m sq


Video on installing floor insulation


Under screed (on slab) possability.

This EPS is much cheaper than more promoted branded stuff and probably just as good. Here is a company in POLAND
https://www.matbay.fr/eps-toit-et-plancher-standard.htm

For example 64 sq metres of 20cm of this R6.45 (per 20cm) would be 817 euros.


Another good video on how to insulate the floor below. Has key details of where to put a vapour barrier – GRADE -> Gravel (with drainage) -> EPS foam -> Vapour barrier (also holds the foam down before 4″ of concrete is poured – > Concrete


Good video on insulation below slab from Kingspan

https://www.youtube.com/watch?v=-sc8y073RUc

Thin sand blinding to level ->appropriate damp proof membrane (well lapped and folded), should lap high enough to connect with, or form, the wall damp proof course -> eps at least 2cm thick vertical around perimeter, top should be level with top of the floor screed (damp proof course), layer and overlap eps -> overlap eps boards with polythene sheet (as a vapour control layer), make sure polythene sheet has 150 mm overlap

PDF details 
https://www.barbourproductsearch.info/Kooltherm%20K103%202nd%20Issue%20Aug%2016-file071371.pdf



Woodburning Stoves

The recommendation for a 120m2 house is a 10kW stove.

The stove we need must be one that supports a direct, external air supply – in French it’s raccordement air extérieur (directly translates as external air connection) – generally done through 125mm ducting. 

Some potentially useful discussion on pistonheads.

The external flue needs to rise to 0.4m (40cm) above the max height of the roof according to building regs.

Our preference is for one that takes 50cm logs.

Enterprise Etude Thermique

Researching companies that will carry out the Etude Thermique (Thermic Study) for our come and provide us with the certificate of conformity to RT2012 to add to our Permis de Construire document. 

www.rt2012-eco.com

  • Etudes thermique RT 2012 (Calcul du coefficient Bbio)
  • Attestation RT 2012 obligatoire pour votre permis de construire de construction neuve ou d’extension
  • Récapitulatif des minimas d’isolation à respecter

135 Euro

https://www.rt-2012.com/

This is the one that An used and paid 199 Euros for. 

Pack Fin de travaux 199 €, includes:

Etude thermique RT 2012
Calcul du Bbio, du Cep et de la Tic
Délai de 7 heures ouvrées
Quelle que soit la surface
CHOISISSEZ
Etude certifiée
Décennale – RGE OPQIBI
Attestation du permis de construire
Compris
Dimensionnement des puissances de chauffage pièce par pièce et ECS
Compris
Modifications de votre étude
gratuites & illimitées
Conseils du thermicien
Par téléphone et messages
Calcul des énergies grises
Compris
Attestation de fin de travaux
remise des fichiers pour son édition