AliG Posted May 9, 2020 Share Posted May 9, 2020 (edited) Birds have built a nest in our guttering and the render is filthy. I had a go with the jet wash, which I know isn’t recommended, but usually gets stuff off. It’s not working well on this. Also I need a taller ladder out to get to the top. Reading on line there are specialist render cleaning companies and they say you need to use hot water and detergent. I also found CT1 recommending Multisolve which is for cleaning adhesive to clean bird droppings. Would I be crazy to fill a bucket with warm water and Flash and brush that on to see how it goes? Edited May 9, 2020 by AliG Link to comment Share on other sites More sharing options...
AliG Posted October 31, 2020 Author Share Posted October 31, 2020 In case anyone has a similar issue. I hired a one man tower and set it up. Scrubbed off the dirt with water and Fairy Liquid. You could still see the stains. I sprayed it with Cillit Bang Black Mould Remover, left it for a few minutes and rinsed it off. Worked a treat. You can only very faintly see where the stain was, if I had left it on longer it would have been better, but I wasn't really enjoying being up the tower. I now plan to use this on my garden walls where I have some areas of staining. 1 Link to comment Share on other sites More sharing options...
tonyshouse Posted October 31, 2020 Share Posted October 31, 2020 My wife wanted me to repaint the render in our last house, I washed it and got away with that, the paint was top quality but had some streaking and a little bit of green algae. Link to comment Share on other sites More sharing options...
Adam2 Posted November 2, 2020 Share Posted November 2, 2020 I used a watered down bleach on our K Rend for cleaning. Sprayed on with a back pack sprayer left for a while and most washed off, used a stiff broom for some bits. Link to comment Share on other sites More sharing options...
AliG Posted November 2, 2020 Author Share Posted November 2, 2020 TBH I think the mould cleaner is just expensive bleach Link to comment Share on other sites More sharing options...
Dave Jones Posted November 3, 2020 Share Posted November 3, 2020 sodium hypochlorite. spray on with 10 quid garden sprayer and leave it overnight. hosepipe it off or let the rain do it will be like new. No scrubbing required. https://www.ebay.co.uk/itm/Sodium-Hypochlorite-14-15-Patio-Cleaner-Swimming-Pool-Chlorine-10-Litres/293530139736?epid=11037962208&_trkparms=ispr%3D1&hash=item4457c27c58:g:r7cAAOSwRsJehe7e&amdata=enc%3AAQAFAAACcBaobrjLl8XobRIiIML1V4Imu%2Fn%2BzU5L90Z278x5ickkvjzWOStkxwnlDuxSI1PVVu8e5rlRA4HwQngsX5udberl6rRHs%2FMOJD89a35nRa2ilDubBNc9iASqP4F72mvHidM9vQ1Z9QMtIcU0mVQP24860dJKaXYXLXtz0RIzgKnX7jBBvFfVLHlxIhGmicbtM%2BAdWsFrEoMhWY2TTrrxJzInoZPOAgHSMvWmcPU0Hi6MVTWNnbzUsgXC1FKCqyRbeeOyZ4YeGeR8M7ItR%2Fn6Jwf09Fzll8dbfe7dlOOQPCI0cT8Rm3b4astrBVCPSVF0EQoNETEtT4bX4t20JbyI00OmvyZKEcQ23YrbPTVfIY1s7q8KEyKqpENP7ezld99QZGO0xwxa0PjqLuJfLZjkQxPs6p0IDI3V5gy%2FjQ97IpDuMhSS46D9%2BlbSe2wvaEixTR0h1S2e11sRco4pvicx5KM2aEmxl9VRfD90V%2BJFNg0C2bJyFBiR%2BNY8dWwilDp42ce9FMEnu%2B0gD7a0FwV0YobiEO88i0ZKit6EpfktrHxp5YXpT03vw%2BG5FuxJbarkoAOAQOcbEMmLKIbA5bYVT9WU0cNW1gkPUqqrjWKI8u%2BGxM56%2BmVfY9nN0U6XEw%2BwIXIFA6m7IwsoZvAVtb%2BP2KzfjZNTFKa1SrBlIC6PhDBBvPZmPNfQW1DbrL9ILqIJLDsI00b%2FTuxwhahwfG26%2Bspi0RwibHrWWPEojUiBnytz431rxp1KAO8zz4IQGatonNnel0vSbCtBJ5ejGPByxL1c3t47PfA8Vl8I9%2FmDuCk6Xiu5XkJhL07ANxOk2EfDUQ%3D%3D|cksum%3A29353013973641e3d213656a429db185ab70e2c2cacc|ampid%3APL_CLK|clp%3A2334524 Link to comment Share on other sites More sharing options...
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