A testing day: Wet UFH with Porcel-Thin

[Rizzle from the Portizzle]

well have been asked to test fixing to wet under floor heating pipe system with porcel thin so first i tested the tile to see how much movement it would allow before fixing so put two battens at each end of a 1200x600x4.8 giving a 150 mm loading each end then loaded the middle to test deflection until the tile broke at 50kg i had 25mm down and 25mm up so over all 50mm of deflection at 55kg the tile broke so unless you suffer an earth quake there is plenty of give in the tile next built 2 boxs 1200 x600 and fixed the heating system in to the boxs then covered the system with mira floor screed .4mm above system .tomorrow i will fit the decouplars one is iso mat the other will be blanke permat then
tile .then leave to dry for a few days then see how much each can take .the plummer has said on site before you self level the system must be under 5 bar pressure so the pipes have exspanded more than when the system is run with heating at 2-3 bar

 

[Rizzle from the Portizzle]

heres some more pictures with the decouplars i will be using

 

[Dan]

I'm going read this thread in a min again mate property.

But I've just added the images actually in the posts for you. There's a button once you've uploaded them as attachments that lets you "add all images as thumbnails".

Click that in future if you remember.

Makes viewing them (especially when you do a load in one post) dead easy on a phone or iPad etc.

Don't worry if you don't remember I'll keep doing it when I spot it (mods too, right lads? Lol)

 

[White Room]

Doing one at the moment with ufh, using Tilemaster anti fracture mat.

 

[Rizzle from the Portizzle]

Doing one at the moment with ufh, using Tilemaster anti fracture mat.

how much did you have to bring the floor up over the pipes what was the total depth you had to build up

 

[White Room]

Over a screed covering the pipes and it's been down for 2 years plus though Ray

 

[Rizzle from the Portizzle]

Over a screed covering the pipes and it's been down for 2 years plus though Ray

this system there is 200mm between pipes the depth of the system is 16mm so 20 mm laid .when the tiler bought the system to me he told me they are fixing it down now i said how are they fixing the base down he said loose lay .i said you better stop the plummer now .the second you start pouring the screed its going to lift straight off the floor you will have to keep on pooring till it hits the ceiling .at 120 m2 thats truck loads .he called and stopped it there and then .we stuck it down with rappid set did the trick held firm

 

[Qwerty]

You've gotta love our little forum tests

 

[Rizzle from the Portizzle]

well got the decouplars down and tiles in the box all fixed will brake out on tuesday and test
the results

 

[Dan]

View attachment 74248 View attachment 74249 View attachment 74250 View attachment 74251 View attachment 74252

well got the decouplars down and tiles in the box all fixed will brake out on tuesday and test
the results

Sorted your images out, again.

 

[Rizzle from the Portizzle]

well here are the results of the iso matting

unloaded 68mm off floor centre

20kg loading 64mm off the floor total 8mm deflection

40kg loading 61mm off floor total 14mm deflection

60 kg loading 58mm off floor total 20mm deflection cracking goes through to tile

 

[Dan]

well here are the results of the iso matting

unloaded 68mm off floor centre

20kg loading 64mm off the floor total 8mm deflection

40kg loading 61mm off floor total 14mm deflection

60 kg loading 58mm off floor total 20mm deflection cracking goes through to tile

Wicked. You've managed to sort images out then.

 

[Rizzle from the Portizzle]

well here are the results of the blanke permat

tile unloaded 75 mm off the floor

20kg loading 73mm off the floor total deflexion 4mm

40kg loading 73mm off the floor total deflexion 4mm

60kg loading 70mm off the floor total deflexion 10 mm

80kg loading 67mm off the floor total deflexion 16mm

90 kg loading 65mm off the floor total deflexion 20mm

100 loading 58 mm off the floor total deflextion 34mm

110 kg loading 54 mm off the floor total deflexion 42 mm

at 115 kg loading the crack goes through to the tile

 

[Spud]

impressive how much strength the permat give it

 

[White Room]

That's some deflection...

 

[Rizzle from the Portizzle]

heres some pictures of the finished floor with the happy tiler

 

[White Room]

Where was that Ray....

 

[Spud]

she has done a great job there Ray , well done Katrina

 

[Old Mod]

Beautiful!

 

[Dan]

Beautiful!

What about the tiling though?
;-)

 

[Old Mod]

Hehe

 

[Rizzle from the Portizzle]

Where was that Ray....

big house in eltam

 

[Rizzle from the Portizzle]

there is still a long way to go with this floor every part has been pushed to its limits and beond looking for the answers can you lay tiles only 4mm above the pipes its breaking all the rules the heating has not been turned on and there are no exspasion joints to door ways wont be for a couple more weeks using thin tiles .and whats being tested on the bathroom floors with wet under floor heating will push it all the way .keeping the hights to the minnum only time will tell

 

[White Room]

there is still a long way to go with this floor every part has been pushed to its limits and beond looking for the answers can you lay tiles only 4mm above the pipes its breaking all the rules the heating has not been turned on and there are no exspasion joints to door ways wont be for a couple more weeks using thin tiles .and whats being tested on the bathroom floors with wet under floor heating will push it all the way .keeping the hights to the minnum only time will tell

May have missed something, are you referring to floor with the lady tiler....

 

[Rizzle from the Portizzle]

May have missed something, are you referring to floor with the lady tiler....

the ground floor is one test the lady tiler passed with flying coulors the next is whats going on up stairs in the bathrooms how low can you go off the joist with wet under floor heating including heating and tile more to follow