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stone waterproofing

  • 26-02-2008 07:36PM
    #1
    clintfan
    Closed Accounts Posts: 8 ✭


    well lads. Im ready to bring my stonemasons on site but the stone i have picked is a sandstone with a dry finish.Im concerned that it will be porous especially when my house is south facing.Would you recomend that i scratchcoat the blockwork before letting the boys get started.


Comments

  • #2
    Beltra
    Closed Accounts Posts: 3 ✭Beltra


    Hi Clintfan.I'm in exactly the same position.I made some enquiries and was toldthat you can apply a sheets of bitchumine that have an adhesive backing.The walls must first be sealed with a primer thatseala the pores?It might be simpler to scratchcoat.helpful suggestions appreciated.:


  • #3
    ircoha
    Closed Accounts Posts: 2,290 ✭✭✭ircoha


    Beltra wrote: »
    Hi Clintfan.I'm in exactly the same position.I made some enquiries and was toldthat you can apply a sheets of bitchumine that have an adhesive backing.The walls must first be sealed with a primer thatseala the pores?It might be simpler to scratchcoat.helpful suggestions appreciated.:

    What will that do to the 'breathability' of the wall behind the bitumen?

    I don't know the answer but it would be useful to post details of the walls in question so as the more 'knowledgeable than I' can help


  • #4
    clintfan
    Closed Accounts Posts: 8 ✭clintfan


    Thanks for all your replies ive been mad busy with my build so im only seeing your comments now.I went with a scratchcoat mixed with waterproofer the masons finish last week and then the heavens opened.I must say the scratchcoat method worked a treat and would definately recommend doing it this way.Dont like the idea of using bitchumine as it wouldnt seal very well around expanding metal and there is a danger of the tar sweating in the summer months.Anyway job done lots more to do


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