Proofex Cavitydrain PM20

Transcription

1 Section A : Health, Safety and Environment A1. Personal safety requirements: 1 Observe the site owner s Health, Safety and Environment policy at all times and obey all written and verbal instructions from site managers and representatives. 2 Wear Personal Protective Equipment: hard hat, safety glasses, boots, gloves, overalls and masks as required. 3 Undertake an appropriate risk assessment before commencing activities. A2. Cleaning & Disposal: Clean site to the site owner s satisfaction prior to final acceptance. Separate waste streams per material types as required per site / regulatory requirements. Section B : General B1. Materials Membranes Proofex Cavitydrain 80 Proofex Cavitydrain 200 Proofex Cavitydrain PB Proofex Cavitydrain PM20 Proofex Cavitydrain SF Ancillary Items Installation Proofex Cavitydrain Brick Plugs Proofex Cavitydrain Plaster Plugs Proofex Cavitydrain Sealing Tape Proofex Cavitydrain Overtape Proofex Cavitydrain Brick Plug Seals Proofex Cavitydrain Plaster Plug Seals Proofex Cavitydrain Sealing Rope Proofex Cavitydrain Corner Strip Ancillary Items Drainage Proofex Cavitydrain Channel Proofex Cavitydrain Channel Connector Proofex Cavitydrain Channel Jetting Eye Proofex Cavitydrain Channel T Piece Proofex Cavitydrain Upstand Channel Proofex Cavitydrain Channel Outlet Proofex Cavitydrain Channel Corner Piece Proofex Cavitydrain Universal Outlet Ancillary Items other Proofex Cavitydrain SB Pump Kit Proofex Anti-Lime Coating Proofex Cavitydrain DB Pump Kit Proofex Cavitydrain Application Page 1 of 9

2 B2. Equipment: The following list of equipment must be adopted as a minimum requirement. Protective clothing : Protective overalls, gloves, goggles, safety boots Installation : Cutting knives, hammer, masonry drill and bits B3. Applicator: The client / main contractor must be satisfied that the applicator has suitable equipment and expertise, and will follow the procedures detailed in this and the relevant product data sheets. B4. Source of Products: It is recommended that only Fosroc products and ancillaries relevant to Proofex Cavitydrain application be utilised, with such products being sourced from Fosroc directly or from a Fosroc authorised distributor B5. General storage of products: Rolls should be stored upright if kept for long periods. Protect from sustained direct sunlight. Covered storage is preferred. Proofex Anti-Lime Coating should be stored at +5 to +25ºC. Keep dry. Protect from freezing. Proofex Cavitydrain Application Page 2 of 9

3 Section C : Application Methodology C1. General Guidance C1.1 Surface Preparation Substrates must be free of protrusions / debris which could damage the membrane. Any unsound renders or gypsum plasters should be removed and any loose / friable masonry repaired before commencing application of Proofex Cavitydrain. Undulating surfaces or depressions in the floor must be avoided when utilising Proofex Cavitydrain in order to maintain effective drainage. Prior to laying the floor membrane, the floor should be flood tested, any high spots and depressions identified should be remediated. Contact Fosroc for further advice concerning appropriate concrete repair products. Prepared surfaces should be treated with Proofex Anti-Lime Coating to minimise lime deposit build up post installation of the Proofex Cavitydrain system. Apply Proofex Anti-Lime Coating at a rate of 2 4 square metres per kg using a brush, roller or suitable spray unit (a wet fan spray pattern should be generated, Proofex Anti-Lime Coating should not be atomised). Allow 2-3 hours for the product to dry. After this period, any areas of pudding should be flushed with water, swept with a broom and allowed to dry. Note: Porous concrete may require subsequent applications, a trial should be conducted to assess the number of applications applied. Note: Very porous concrete or masonry containing visible holes and air pockets are more effectively treated using Fosroc Nitocote CM210. Note: If the surfaces have previously been treated with a waterproofing coating (e.g. Fosroc Nitocote CM210), the use of Proofex Anti-Lime coating is not required. C1.2 Natural Drainage (Gravity) Natural drainage connects the Proofex Cavitydrain system to local soakaways or sewerage drains. This is only possible where the lowest level of the cavity membrane system is above the soakaway / sewerage drain ingress level. Note: Soakaways & sewerage drains can block / become saturated during heavy rainfall, this may reduce the effectiveness of the drained cavity system. Sump and pump (mechanical) drainage is therefore preferred for Proofex Cavitydrain installations. C1.3 Sump & Pump (Mechanical) A pre-formed sump is installed below the cavity membrane. A float activated submersible pump maintains the water level in the sump to safe levels. The pump kit includes a primary and secondary pump and a battery backup power pack with alarm system. Note: for a single storey basement, when laid without a fall the maximum length of drainage channel to the nearest sump should be 25m and the maximum total run of channel connected to a sump should be no more than 50m. For multi-storey basements, the required number of sumps should be calculated such that the cumulative length of channel (taking account of the channels on all floors) serviced by each sump does not exceed 50m. Proofex Cavitydrain Application Page 3 of 9

4 C1.4 Location of Sump Pits Sumps should be located at the lowest point in the floor area below the bottom level of the cavity membrane system, the location must remain easily accessible once finishing materials are applied. C1.5 For New Construction Form a concrete sump pit of minimum internal dimensions 1000mm x 1000mm x 600mm (l x w x h) within the floor slab construction in which to house the 600mm diameter x 600mm high sump chamber as per standard detail drawing CD11 Prior to concrete pour a 110mm drain pipe should be laid running from the sump pit to the perimeter channel at its closest location. It is recommended that two separate inlet pipes be routed to the sump, particularly if the sump is to be located in a corner. C1.6 For Existing Construction Excavate a sump pit of minimum internal dimensions 1000mm x 1000mm x 700mm (l x w x h) within the floor slab construction in which to house the 600mm diameter x 600mm high sump chamber as per standard detail drawing CD06. At the base form a level concrete surface using Renderoc LA typically 100mm thick or as appropriate to suit the required finished level of the sump access hatch. Form a channel of at least 100mm wide x 60mm deep in the floor slab running from the perimeter to the sump pit in which to place Proofex Cavitydrain Channel. It is recommended that two separate inlet pipes be routed to the sump, particularly if the sump is to be located in a corner. C1.7 Installation of Sump Connect inlet and outlet connecting pipes / channels to the sump as required (see separate pump installation guide). Insert the sump chamber and adjust the level as required for the finished floor. ¾ fill the sump with water then infill around the sump with Renderoc LA, ensure good compaction around the external profile of the sump. After the concrete has cured, drain sump of water, install and connect pump kit (see separate pump installation guide). C2. Perimeter Channel Construction C2.1 New Construction Form a 100mm wide x 60mm deep (minimum size) rebate in the floor slab directly adjacent to the walls using a timber former. Place Proofex Cavitydrain Upstand Channel into the formed rebate (see standard details CD01, 02, 04). Note, Proofex Cavitydrain Upstand Channel has a profile of 80mm wide x 50mm. Proofex Cavitydrain Application Page 4 of 9

5 C2.2 Existing Construction At floor / wall junctions around the perimeter of the area cut a 130mm x 130mm rebate into the floor. Place 20mm washed stone with no fines into the base of the rebate to provide a suitable level surface onto which the Proofex Cavitydrain Upstand Channel can subsequently be laid (see standard details CD03). C2.3 New / Existing Construction (where a rebate cannot be formed in the floor slab) Rebate to be formed using screed on top of floor slab to a depth of 60mm leaving a 100mm wide gap at the perimeter. Place Proofex Cavitydrain Upstand Channel into the formed rebate (see standard detail CD19). Alternatively place Proofex Cavitydrain 200 onto the floor slab and overlay with closed cell polystyrene insulation to a depth of at least 60mm leaving a 100mm wide gap at the perimeter. Overlay the insulation and channel with Proofex Cavitydrain SF forming a seal at the wall with Proofex Cavitydrain Corner Strip (see standard detail CD13). C2.4 Floor Joints Where joints either exist or are to be formed a 100mm x 60mm minimum channel in the floor slab centrally over the joint to accommodate Proofex Cavitydrain Channel to direct water ingress either directly or via the perimeter channel to the sump. C2.5 Stepped Changes in Floor Level Channels should also be formed to accommodate Proofex Cavitydrain Channel or Proofex Cavitydrain Upstand Channel adjacent to the vertical face of steps in the floor level (see standard detail CD15). C3. Channel / Outlet connections 1. In new construction where a vertically positioned 110mm diameter drain pipe connecting to the sump can be set into the base slab below the Proofex Cavitydrain Channels, use Proofex Cavitydrain Universal Outlet. 2. In existing construction where chases for the drain pipe(s) connecting to the sump are cut into the slab, use Proofex Cavitydrain Channel Outlet, this has an output connector for a 43mm drain pipe. 3. Connect individual lengths of Proofex Cavitydrain Channel together using Proofex Cavitydrain Channel Connectors, Proofex Cavitydrain Channel T Pieces and Proofex Cavitydrain Channel Corner Pieces as required. 4. Connect a Proofex Cavitydrain Jetting Eye at approximately every 10-12m to the Proofex Cavitydrain Channel. A Proofex Cavitydrain Jetting Eye should also be placed at all changes of direction of Proofex Cavitydrain Channel. C4. Application of Proofex Cavitydrain 80 (Vertical) 1. Measure and cut lengths of Proofex Cavitydrain 80 for the section of wall to be treated, allowing for the overlap of the flanges between adjacent lengths. Note, avoid overlaps between membrane sheets at corners and angles. The membrane is to be finished at a level 10-20mm above the bottom of the drainage trenches formed in C2 (see standard details CD/01, 02, 03, 04). Membrane lengths may be Proofex Cavitydrain Application Page 5 of 9

6 applied either horizontally or vertically depending on contractor preference. Note, if installing horizontally, the overlaps should be such that the lower of the membrane sheets is positioned in front of the upper. 2. Place membrane against wall (studs facing wall) and drill through a cuspation at the top left corner using a 10mm masonry drill bit. Wrap Proofex Cavitydrain Sealing Rope just below the head of a Proofex Cavitydrain Brick Plug (alternatively use a Proofex Cavitydrain Brick Plug Seal). Hammer (use of a lump hammer is recommended) the Proofex Cavitydrain Brick Plug through the membrane into the drilled hole so that it seals into the cuspation. After levelling out the membrane, repeat process for top right corner. 3. Repeat step 2 for adjacent lengths of membrane, overlapping the flange onto the previous length and aligning the cuspations before drilling and fixing the Proofex Cavitydrain Brick Plugs. Note the flanged edge is always positioned in front of the previously applied length. 4. Thoroughly clean the flange and studs on the overlap area. Note any dust will compromise the seal integrity. Brick / plaster dust should be washed off with clean water and dried with lint free cloths. Adding detergents to the cleaning water is not recommended. 5. Apply Proofex Cavitydrain Sealing Tape in a vertical orientation to the overlapping sheet between the studs. 6. Remove Proofex Cavitydrain Sealing Tape release paper starting at the mid-point of a wall length. Working upwards from the mid-point, press the Proofex Cavitydrain Sealing Tape into the adjacent sheet below using hand pressure. Repeat from the mid-point to the floor. This method of overlapping minimizes buckling of the membrane. 7. Additional Proofex Cavitydrain Brick Plugs should be positioned to ensure the membrane is fixed securely and tightly to the wall (paying special attention to corners and angles) and to accommodate construction of subsequent dry lining systems. Fixings should be subject to a maximum spacing of 600mm centres. 8. Where end laps are required to be jointed, place an overlap of 200mm and seal with Proofex Cavitydrain Overtape. 9. Where pipes or ducts protrude through walls, cut a hole in the membrane to tightly fit around the entry. Seal the gap with a combination of Proofex Cavitydrain Sealing Rope and Proofex Cavitydrain Corner Strip (see standard details CD09, 10). 10. Timber battens for dry lining systems are affixed into the Brick Plugs. Alternatively if a blockwork lining wall is to be constructed and tied through Proofex Cavitydrain use 6mm diameter threaded wall ties fixed into the heads of the Brick Plugs (see standard details CD01, 02, 03). For other types of fixing, parallel sided no.10 screws should be recommended. 11. Connect suitable 40mm pipe to the Proofex Cavitydrain Jetting Eye inlets. Pass the pipe through the chosen interior wall finish and terminate with an access plate cover (see standard details CD/01, 02, 03, 04, 05). C5. Application of Proofex Cavitydrain 200 (Horizontal) 1. Unroll Proofex Cavitydrain 200 with the studs downward facing. Cut to the desired length. Proofex Cavitydrain Application Page 6 of 9

7 2. Adjacent lengths should be overlapped by two cuspations. After cleaning the overlap area as described in section C2.4, apply Proofex Cavitydrain Sealing Rope between the two rows of cuspations being overlapped. 3. Remove the release paper from the Proofex Cavitydrain Sealing Rope. Apply pressure by foot to seal the overlap. 4. Where pipes or ducts protrude through walls, cut a hole in the membrane to tightly fit around the entry. Seal the gap with a combination of Proofex Cavitydrain Sealing Rope and Proofex Cavitydrain Corner Strip (see standard details CD/09, 10). 5. Where Proofex Cavitydrain 80 has been used on walls, finish Proofex Cavitydrain 200 flush against it. 6. Seal gap between Proofex Cavitydrain 80 and Proofex Cavitydrain 200 using Proofex Cavitydrain Cornerstrip. 7. Note: Where no cavitydrain membrane is to be used for the walls, Turn Proofex Cavitydrain 200 up the walls by 100mm and seal the corner as described in C Options for floor finishes above Proofex Cavitydrain 200: Note for any of the below scenarios, if desired, rigid insulation boards may be placed over Proofex Cavitydrain 200 before the chosen floor finish (note that it s not necessary to fill the cuspates with sand cement first generally). 1. >75mm reinforced screed for domestic applications (see standard details CD/01 to 06). 2. >100mm reinforced concrete for industrial applications 3. Flooring Grade tongue and groove chipboard base, finished with laminate, parquet or wood strip. Note 1: Where a non-load bearing blockwork partition wall is to be built on top of the membrane, for the area of membrane supporting the wall, the cuspations within the membrane should be filled with a sand / cement mortar before laying the floor finish. Note 2: Where a load bearing blockwork wall is to be constructed over the floor slab it should be built over engineering bricks laid with 25mm wide open joints at 900mm centres and the Proofex Cavitydrain 200 sealed to a dpc placed between the engineering bricks and the blockwork above (see standard details CD14 and CD18). C6. Proofex Cavitydrain PB 1. Measure and cut lengths of Proofex Cavitydrain PB for the section of wall to be treated, allowing for a minimum overlap of two cuspations between adjacent lengths. 2. Place membrane against wall (studs facing wall), at the top left corner use an 8mm masonry drill bit to drill a hole at least 3 cuspations in from the edge in the centre space between 4 cuspations (do not drill through the cuspation itself). 3. Wrap Proofex Cavitydrain Sealing Rope just below the head of a Proofex Cavitydrain Plaster Plug. Alternatively use a Proofex Cavitydrain Plaster Plug Seal. Hammer the Plaster Plug through the membrane into the drilled hole so that it seals into the membrane. After levelling out the membrane, repeat process for top right corner. Note, where Proofex Cavitydrain PB is applied in vaulted areas, the use of Proofex Cavitydrain Sealing Rope is required instead of Proofex Cavitydrain Plaster Plug Seals. Proofex Cavitydrain Application Page 7 of 9

8 4. Repeat step 2 for adjacent lengths of membrane, overlapping by at least two cuspations onto the previous length and aligning the cuspations before drilling and fixing the two Proofex Cavitydrain Plaster Plugs in the top corners of the membrane. 5. Additional Proofex Cavitydrain Plaster Plugs should be positioned at 150mm centres down the overlaps. 6. Continue fixing Proofex Cavitydrain Plaster Plugs in a diamond pattern such that a minimum of 13 plugs per m 2 is achieved. In order to provide a sound base for render / plaster, the membrane must be tightly fixed to the walls with no voids behind it. 7. Apply Proofex Cavitydrain Overtape along the joints. An equal overlaps onto each adjacent length should be achieved. 8. Plastering / Rendering. General purpose cement or gypsum renovating plasters may be used (British Gypsum Hardwall or Toughcoat are not recommended). Apply plaster / render in a minimum of two coats. Trowel the 1 st coat into the cuspations at a thickness of 7 10mm and scratch key. After this has cured for at least 7 days, apply the 2 nd coat. 9. If fixing objects to Proofex Plasterbase after rendering / plastering, timber battens may be bonded to the plaster directly. If fixing through the wall, Proofex Cavitydrain Brick Plugs sealed with Proofex Cavitydrain Sealing Rope can be applied as follows. a. Drill a 10mm hole through the plaster and membrane into the wall. b. Enlarge the hole within the render / plaster in front of the membrane surface to accommodate the Proofex Cavitydrain Brick Plug head. c. Wrap Sealing Rope below the head of the Proofex Cavitydrain Brick Plug (alternatively use a Proofex Cavitydrain Brick Plug Seal). d. Install the Brick Plug so that it sits flush with the membrane surface and seals against it. 10. Note: When using Proofex Cavitydrain PB, due to the lack of a wall cavity, Proofex Cavitydrain Jetting Eye access pipes are brought through the floor finishes. C7. Doors and Window Openings 1. Remove any existing frames and form termination detail with Proofex Cavitydrain Cornerstrip (see standard details CD07). 2. Refit new frames into Brick Plugs installed through the Proofex Cavitydrain Cornerstrip. C8. Other Details For advice concerning details such as columns and intermediate floor construction. C9. Pump Installations Refer to separate installation guidance. Proofex Cavitydrain Application Page 8 of 9

9 C10. Maintenance 1. It is recommended to wash the Proofex Cavitydrain Channels once every six months via the Proofex Cavitydrain Jetting Eyes. The sumps should also be cleaned of any accumulated sludge / grit during this process and the pumps and high level alarm checked for correct functionality. Note, the first maintenance procedure should be carried out after 6 months but annually thereafter. Section D : Approval and variations This method statement is offered by Fosroc as a standard proposal for the application of Fosroc Proofex Cavitydrain. Any variation to the above system must be approved by Fosroc in writing. Where alternative methods are to be used, these must be submitted to Fosroc for approval, in writing, prior to commencement of any work. Fosroc will not accept responsibility or liability for variations to the above method statement under any other condition. Proofex Cavitydrain Application Page 9 of 9