<ul><li><p>Thank you for inviting us to forward our survey observations along with our specification and quotation for the waterproofing of the basement area to the above property.</p><p>It was reported whilst on site that the basement area has been subject to severe flooding of recent and on a regular basis. It appears that the basement area has been flooding via blocked drains which has permitted foul/rainwater to enter the premises via man hole covers and has left existing plaster finishes in a defective and most probably contaminated condition.</p><p>In accordance with BS8102: 2009 we believe the area is to be used for habitable purpose/archiving of documents and this grade is classed as a Grade 3. This grade assumes there to be a dry environment with appropriate air conditioning present and as such is what our design is based upon, unless otherwise requested.</p><p>To comply with BS8102, it is also noted that the floor should be a structural slab. Although we have not excavated the floor to confirm if it is, it was noted to appear to be of sound type. Should the client wish to proceed with the slab as it is however, the client will be assumed to accept responsibility if said slab should fail structurally in the future.</p><p>To be fully compliant with BS8102: 2009 the complete basement would require fully waterproofing. It should however be noted that compliance with BS8102 is not mandatory and that if the client was to cover only part of the basement, they should be aware that if problems should occur via those areas not treated, then they would be accepting full responsibility for any such failure. We have presently forwarded our specification to include only those areas noted on the attached sketch along with the appropriate quotation</p><p>Please find below our break down of works to be completed by both you the client and by City Remedial along with appropriate quotation, inclusive of materials and labour.</p><p>Please refer to attached drawing.</p></li><li>As noted on the attached drawing, we had no access to one room and to the under stairs area and have noted included them within our package of remedial waterproofing works. We will be pleased to carry out a survey to these areas should access be made available. We have also not quoted for remedial works to the WC areas as these are fully tiled and no evidence of damage is currently visible. We cannot however state categorically that this area has not been affected in any way. We await your comments.</li></ul><p>Recommendations</p><p>1) &nbsp; To hack off all existing render to full height, to those areas indicated in bold green on the attached sketch, back to exposed brickwork or concrete.</p><p>2) &nbsp; To form a deep seal chase to the floor wall junctions were noted in bold green.</p><p>3)&nbsp;&nbsp; City Remedial to mechanically prepare exposed surfaces.</p><p>4) &nbsp; To apply a waterproof slurry and render system to all walls noted, down into the deep seal chase.</p><p>5) &nbsp; To apply a plaster skim finish to all walls that have been waterproofed.</p><p>6) &nbsp; To infill deep seal chase with a waterproof screed</p><p>7) &nbsp; Moving&nbsp;fittings furniture and floor covering to works areas</p><p>8) &nbsp; Move &nbsp;suspended ceilings to works areas.</p><p>9) &nbsp; Renew vinyl to perimeter of basement highlighted green in attached drawing</p><p>10) All protection and cordoning off of works areas as required.&nbsp;</p><p>11) Remove all resultant debris from &nbsp;works and leave site clean and tidy.&nbsp;</p><p>Our total cost to carry out the above stated works in normal working hours shall be: &pound;33,958.40 + VAT</p><ul><li>Further to the above works we strongly recommend&nbsp;a drainage CCTV survey to be carried out in order to establish the cause of the flooding experienced in the basement.</li><li>Findings of the CCTV survey are subject to the findings and further recommendations.</li></ul><p>Our total cost to carry out a CCTV drainage survey shall be: &pound;850.00 + VAT</p><p>&nbsp;</p>