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Evening all, Has anyone tried adding Hydrochloric Acid HCL to a central heating system and ran it whilst heating is on? I understand it will react with water especially when hot. All copper on the system, just looking at a way round replumbing central heating due to severe pipe blockages...

Good afternoon all, Following on from a post I made roughly a month ago, which can be found //www.diynot.com/diy/threads/no-heat.429709/ where I wrote about not having heating downstairs but upstairs was fine. The system is one pipe with 19 rads up and down and an Ecomax 635 system...

Hello all, Have a one pipe system, thats been working fine for over 3 decades! Recent issues with upstairs working and downstairs not working. Have had a new pump new expansion vessel and new heat exchanger and 6 new rads and valves - all faulty luckily covered by homeserve. Been...

Hello everyone, In regards to fixings what fixing can hold up the most weight, Resin with stud or expanding bolts? Many thanks

Hello everyone, I wanted to know whether running Fernox DS40 through my boiler would cause any damage to it, I am planning on a powerflush this weekend and wanted to know if I need to isolate the boiler from the rest of the system. Obviously being acid do not want to cause any damage. Also...

Hello There a minimum clearence from an external doors leading edge to a wall. I want to build as close as I can to the back of the house with a door. Many thanks

Hello everyone I have a newly laid concrete floor, 150mm hardcore, sand, dpm, 100mm insualation with a concrete slab. I want to batten out the slab with 2x2s then lay p5 chipboard over it ensuring I get a perfect level. Are there any issues in terms of ventilation preventing the timbers...

Hello What is the minimum width for a corridor in a restaurant and internal door sizes? Thank you

Hello I have a 146 wide beam on a 225 wide solid brick wall, the beam is positioned directly in the middle. Is it ok to pack out below the 1st course of bricks with paving slabs used for gardens? If not are roofing tiles still acceptable? If so what tiles would be suitable? Many Thanks

Hello What size mains mdpe pipe would be required for 2 studio flats and 1 1 bedroom flat all on combis and with no tanks? The water company Veolia have provided a quote for a 63mm barrier pipe with a 4 port manifold which then reduces to 25mm at close to £5000! Surely a 32mm pipe would...

Hello Guys Do you need double plasterboard beneath roofvoid to protect the roof structure from fire spread? Thank you

Hello Everyone I have 2 separate landings and 2 separate staircases in a building consisting of 3 flats. Their are 3 storeys in total for the building. What are the requirements to ventilate the communal areas in case of a fire? I have seen a Velux 1m2 smoke ventilation system which is...

Hello Everyone What is the weight of a single storey solid double skin brick wall in KN. Thank you

Hello Everyone I just wanted to know if you had a beam connection where the supporting beam is running perpendicular to the beam it is going to support and you are connecting the beam via a bolted method to the webs of both beams, what would be the best connection to use to resist the...

Hello Everyone What are the requirements of Part B in regards to smoke and heat detectors in flats? The building contains 3 flats spread across the 1st and 2nd floors. I understand at least 1 smoke and heat detector in each kitchen, which must be mains integrated, also t&e or 3 core if...

Hello again A quick question regarding Vapour control barriers. Existing walls are double skinned brick, no cavity no insulation, I plan to fix 3x2 battens insulate Between with 50mm celotex. My question is regarding the VCL. I read somewhere about taping up the edges of the celotex...

Hello Everyone I currently have 6x2 joists at 400 centres on the 1st floor. If I insulate between them using an acoustic roll such as isover apr 1200. Then overlay with existing floor boards then lay 18mm T&G chipboard, then lay laminate flooring with the correct underlay, from your...

Hello Everyone Quick question regarding an RSJ Calc. There is currently a trussed partition providing intermediary support to the ends of the 2nd floor, floor joists. The joists are sitting on the external walls of the building but are being supported at their ends in the middle of the...

Hello Everyone If you are removing a shared chimney stack from a party wall, is there a minimum amount of chimney you need to leave before installing beams brackets etc? Just curious for the design of a room. Also is there any notice other than building regs required to be submitted, in...

Hello everyone If MDPE gets scratched, not deep but minor surface blemishes while being pulled through, will it effect joints? There not deep but you can feel them and see them just about. Also whats the best way to pull it through tight spaces? Should I wrap tape around the ends just...