Results 1 to 6 of 6

Thread: Soft wash slate

  1. #1

    Default Soft wash slate

    Anybody can give me an idea what I'm up against on this 100 yr old slate roof?



    Sent from my SM-T530NU using Tapatalk

  • #2

    Default Re: Soft wash slate

    Michael,
    Slate is surface, like Cedar, that has different factors than a regular Shingle Roof. 3-4% mix and let it dwell, but you will need to rinse the crap out of the roof. SH can leave a funky residue on slate if not rinsed, plus you have some moss build up between the slates. Also, looks like no gutters, so rinse thoroughly and divert and protect the plants and the rest of the house. The copper valley flashings will loose their green patina appearance and most likely turn back to a more copper/orange color. The patina green will come back, but it will take months. Some of the slate looks like there is some orange discoloration, which is the iron ore in the slate tile itself. This orange may lighten, but it may not. Just set your customers expectations. And DO NOT try to walk slate roofs. Spray and rinse from ladders and the ground. Hope this helps and good luck!!



    Owner - John Aloisio RRC, RRO
    The Roof Wizard - Roof & Exterior Cleaning
    880 S. Grand St. , Hammonton, NJ 08037
    609-705-0093

  • #3

    Default Re: Soft wash slate

    Quote Originally Posted by John Aloisio View Post
    Michael,
    Slate is surface, like Cedar, that has different factors than a regular Shingle Roof. 3-4% mix and let it dwell, but you will need to rinse the crap out of the roof. SH can leave a funky residue on slate if not rinsed, plus you have some moss build up between the slates. Also, looks like no gutters, so rinse thoroughly and divert and protect the plants and the rest of the house. The copper valley flashings will loose their green patina appearance and most likely turn back to a more copper/orange color. The patina green will come back, but it will take months. Some of the slate looks like there is some orange discoloration, which is the iron ore in the slate tile itself. This orange may lighten, but it may not. Just set your customers expectations. And DO NOT try to walk slate roofs. Spray and rinse from ladders and the ground. Hope this helps and good luck!!
    Ok, that's great feedback! That was my biggest concern was the orange "framing" around each tile. I think I'll do a little test spot and see what happens.

    Sent from my SM-T530NU using Tapatalk

  • #4

    Default Re: Soft wash slate

    Quote Originally Posted by John Aloisio View Post
    Michael,
    Slate is surface, like Cedar, that has different factors than a regular Shingle Roof. 3-4% mix and let it dwell, but you will need to rinse the crap out of the roof. SH can leave a funky residue on slate if not rinsed, plus you have some moss build up between the slates. Also, looks like no gutters, so rinse thoroughly and divert and protect the plants and the rest of the house. The copper valley flashings will loose their green patina appearance and most likely turn back to a more copper/orange color. The patina green will come back, but it will take months. Some of the slate looks like there is some orange discoloration, which is the iron ore in the slate tile itself. This orange may lighten, but it may not. Just set your customers expectations. And DO NOT try to walk slate roofs. Spray and rinse from ladders and the ground. Hope this helps and good luck!!
    great stuff
    CleanPro
    Nick Giordano
    636-686-7137

  • #5
    Contributing Member No Posting Eric Seitz's Avatar
    Join Date
    Dec 2011
    Posts
    113
    Blog Entries
    8

    Default Re: Soft wash slate

    When cleaning slate use no soap just sh and water.

  • #6

    Default Re: Soft wash slate

    Quote Originally Posted by Eric Seitz View Post
    When cleaning slate use no soap just sh and water.
    Ok. Sounds good. What's your opinion of the orange framing. Think I can get rid of it?

    Sent from my SM-T530NU using Tapatalk

  • Thread Information

    Users Browsing this Thread

    There are currently 1 users browsing this thread. (0 members and 1 guests)

    Bookmarks

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •  
    Single Sign On provided by vBSSO