<p>Further to our recent site visit, we have pleasure in providing our report on the existing roofs&nbsp;together with our specification and quotation for the works discussed:<br />For the purpose of this report and specification all directions were taken from outside the building&nbsp;looking towards the front.<br />For your further information we enclose our plan drawing of the roof area.</p><p><br /><strong>Survey Report</strong><br />We are concerned in this report and specification with the main flat roof area. The roof area is&nbsp;covered with a single-ply membrane manufactured by `Sarnafil&rsquo;, and this waterproofing system is&nbsp;of a mechanically fixed type with the washers and fixings being side lap fixed, over the insulation.&nbsp;Incorporated into the flat roof area is a glazed atrium, numerous air handling vent units and plant.&nbsp;The client reports several `leaks&rsquo; to the East elevation of the glazed atrium, and during our&nbsp;inspection it was noted that numerous repairs have been carried out in the past, which appear to&nbsp;have failed and we noted that the coating application in this area has lifted in several areas.<br /><br />The client also reports that a persistent `leak&rsquo; to the North West elevation of the glazed atrium was&nbsp;present, and during our inspection it was noted that repairs have been carried out in the past. No&nbsp;obvious defects to the roof membrane were noted and small holes or splits in this type of&nbsp;membrane can be notoriously difficult to trace, and consequently we would have to Engage the&nbsp;services of a specialist leak detection service, to undertake a leak survey above the areas of&nbsp;reported leaks approximately 40m2, and provide a report of their findings.<br />At the time of our inspection we did not remove any material or take a core sample, therefore it is&nbsp;not possible to determine the build up or the thickness of the existing insulation material.&nbsp;We have included for patch repairs as an option, but we would not be able to offer any guarantees&nbsp;against water ingress. A further option for a high performance coating system is shown.&nbsp;Therefore from the evidence available to us at the time of our inspection, and from our discussions&nbsp;on-site, we would propose the following works and our specification is as follows.</p><p><strong>Specification for the Proposed Works</strong><br /><strong>Option One<br />Item One - Remedial Repairs</strong><br />Strip off the existing defective repairs to the rear of the atrium, this being taken where possible&nbsp;down to the existing membrane, care being taken not to cause undue damage to it&rsquo;s surface. All&nbsp;debris will be lowered to ground level and loaded into skips or lorries and removed from site at our expense.&nbsp;In areas where it is found that the existing material is so firmly adhering to the membrane that any<br />attempt at removal will cause severe damage, the new material will be laid over, having prepared&nbsp;the surface to a suitable standard.<br />Sweep clean and prepare the roof surfaces, ensuring all surfaces that are to be treated are clean,&nbsp;dry and fully adhered to the existing substrate. Any splits, cracks or other blemishes are to be filled&nbsp;with SIGnature PU Detail Paste and a tilt fillet created using SIGnature PU Detail Paste on all 90&deg;&nbsp;angles, e.g. changes of directions, upstands, roof lights, pipe work etc. Apply by brush or roller a&nbsp;coat of PVC primer at the recommended coverage rates and allow to fully cure before any further&nbsp;product application.&nbsp;On completion of all preparatory works, SIGnature PU-10 can then be applied to the previously prepared areas at a coverage rate of no less than 1.5kgm2 to 1.8kgm2.&nbsp;All upstands and any detail areas where it proves impossible to apply the Reinforcing Tape<br />SIGnature PU Liquid Fibred will be used at a minimum coverage rate of 1.8kgm2.&nbsp;</p><p><br /><strong>Walkways</strong><br />A base coat of hard wearing Polyurethane Surface Protection for walkways would be applied and&nbsp;Quartz Granules sprinkled over the first coat whilst wet to create a slip resistant surface, a further&nbsp;coat would be applied applied as a sealer once the initial coat/quartz application is dry and the&nbsp;surplus granules are brushed off.&nbsp;The above specification would be carried out in strict accordance with the manufacturer&rsquo;s&nbsp;instructions to an overall roof area of approximately 60m2, including for roofing upstands, kerbs,&nbsp;drips and all other associated roofing details.&nbsp;<br /><strong>Item Two - Leak Detection Test</strong><br />Engage the services of a specialist leak detection service, to undertake a leak survey to the North&nbsp;West elevation of the glazed atrium above the areas of reported leaks approximately 40m2, and&nbsp;provide a report of their findings.&nbsp;The single ply membrane around each area identified would be carefully checked for any small&nbsp;holes or splits and defects found would be repaired using a specialist EPDM fixing kit, to avoid any&nbsp;adverse chemical reaction with the existing membrane, and to ensure an effective and long-term&nbsp;solution.</p><p><br /><strong>Option One Total Project Cost: &pound; 8,287.40</strong><br />We would carry out these works using our best endeavours, and providing that we can trace the&nbsp;points of ingress, are confident that we would resolve your problem. With this type of &lsquo;localised&rsquo;&nbsp;work we are unable to offer our usual comprehensive guarantee, as due to the nature or this type&nbsp;of work, rainwater ingress may occur from adjacent roof areas due to defects not apparent at the&nbsp;time of our inspection. Should the problem persist, it is likely that more extensive works would be&nbsp;required, and as small holes or splits in this type of membrane can be notoriously difficult to trace,&nbsp;we would need engage the services of a specialist to carry out an electronic leak detection survey&nbsp;to undertake a leak survey to the flat roof area, and provide a report of their findings.<br /><strong>Option Two - PU 10 Liquid Coating</strong><br />Item One - Qualified Area for High Performance Coating. Strip off the existing defective repairs to the rear of the atrium, this being taken where possible&nbsp;down to the existing membrane, care being taken not to cause undue damage to it&rsquo;s surface. All&nbsp;rubbish will be lowered to ground level and loaded into skips or lorries and removed from site at&nbsp;our expense.&nbsp;In areas where it is found that the existing material is so firmly adhering to the membrane that any&nbsp;attempt at removal will cause severe damage, the new material will be laid over, having prepared&nbsp;the surface to a suitable standard.&nbsp;Sweep clean and prepare the roof surfaces, ensuring all surfaces that are to be treated are clean,&nbsp;dry and fully adhered to the existing substrate. Any splits, cracks or other blemishes are to be filled<br />with SIGnature PU Detail Paste and a tilt fillet created using SIGnature PU Detail Paste on all 90&deg;&nbsp;angles, e.g. changes of directions, upstands, roof lights, pipe work etc. Apply by brush or roller a&nbsp;coat of PVC primer at the recommended coverage rates and allow to fully cure before any further&nbsp;product application.&nbsp;On completion of all preparatory works, SIGnature PU-10 can then be applied to the previously&nbsp;prepared areas at a coverage rate of no less than 1.5kgm2 to 1.8kgm2.&nbsp;All upstands and any detail areas where it proves impossible to apply the Reinforcing Tape&nbsp;SIGnature PU Liquid Fibred will be used at a minimum coverage rate of 1.8kgm2.<br /><strong>Walkways</strong><br />A base coat of hard wearing Polyurethane Surface Protection for walkways would be applied and&nbsp;Quartz Granules sprinkled over the first coat whilst wet to create a slip resistant surface, a further&nbsp;coat would be applied applied as a sealer once the initial coat/quartz application is dry and the&nbsp;surplus granules are brushed off.&nbsp;The above specification would be carried out in strict accordance with the manufacturer&rsquo;s&nbsp;instructions to an overall roof area of approximately 190m2, including for roofing upstands, kerbs,&nbsp;drips and all other associated roofing details.<br /><strong>Item Two - Leak Detection Test</strong><br />Engage the services of a specialist leak detection service, to undertake a leak survey to the North&nbsp;West elevation of the glazed atrium above the areas of reported leaks approximately 40m2, and&nbsp;provide a report of their findings.&nbsp;The single ply membrane around each area identified would be carefully checked for any small&nbsp;holes or splits and defects found would be repaired using a specialist EPDM fixing kit, to avoid any&nbsp;adverse chemical reaction with the existing membrane, and to ensure an effective and long-term&nbsp;solution.<br /><strong>Option Two Total Project Cost</strong>: <strong>&pound;16,360.10</strong><br />Statutory Requirements. - It is the responsibility of the customer to obtain any planning&nbsp;permission and or approval of the said works under any regulations or by-laws of any local or other&nbsp;statutory authority. In addition, the contractor cannot be held liable for the&nbsp;failures in roof systems&nbsp;due to poor structural design, or inherent faults in the building, or its services, or abnormal&nbsp;atmospheric conditions, unless these are bought to the contractor&rsquo;s attention, in writing, before the&nbsp;commencement of the contract.&nbsp;Should there be a time scale involved for the completion of the works, we would need to be made&nbsp;aware of this prior to an official purchase order being accepted. We would anticipate a contract&nbsp;duration of 1-2 weeks (dependant on option chosen), to complete all the works, subject to weather&nbsp;conditions.&nbsp;Our quotation is based on the assumption that access to the roof will be available via the existing<br />lifts and stairways within the property.</p><p><strong>Project Notes:</strong><br /><br />Our quotation has been calculated on the following assumptions:<br />a) All old material and debris removed from the roof will be loaded into skips or lorries<br />provided by ourselves, and removed from site at our expense and as our property.<br />c) Our operatives will not be involved in waiting time or repeated breaks in continuity.<br />d) Suitable safe storage will be provided by yourselves for our materials, plant and equipment<br />close to the works.<br />Throughout the contract, a working foreman will be on site to liaise with yourselves as regards the<br />day to day running of the contract.</p><p>&nbsp;</p>