落水系统的作用是什么

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1、落水系统的作用是什么？落水系统又称屋面雨水排水系统，包括成品天沟、落水管及相关组件。其作用是有效地汇集屋面雨水，有组织地将雨水合理高效地排离建筑物，从而在完成屋面雨水排放的同时很好地保护房屋的外立面和地基，尽量延长建筑物的使用寿命。雨落水系统是由那些部份部组成的？落水系统主要有两部份组成：天沟及配件（包括：左右封盖、内外转角、天沟吊件、批水板）挡叶网等），落水管及配件（包括：弯头、管卡、下水器、三通等）不同金属材料的落水系统都有那些优缺点？彩铝：低成本，相对容易维护，20多种颜色，容易安装，烤漆面20年以上的保质期热胀冷缩是铁的两倍，铜的1。5倍，强度不够，容易挤压变形镀锌板：强度比相同厚度的

2、铝高，约1.5倍，不易变形，在北部冰雪天气情况下较多使用随着时间的过去会生锈，镀锌层一般很少镀的平整干净均匀，镀层会过早地脱落，热镀锌材料是首选，但不建议用在海洋汽修的环境中，除非是彩涂铜：是一种高品质保值材料，适用于历史性保护建筑物上。铜绿与很多屋顶产品很般配。低维护，不用喷涂，不会生锈，非常适合与沿海环境。是一种最耐用，使用寿命最长的材料。成本高，要求技术精湛的安装工人切割，焊接。落水管的尺寸都有那些：克虏斯无缝落水管尺寸有：2X3英寸（51X75mm），3X4(76.2X101mm)英寸矩形管，3英寸(76mm)，4英寸(100mm)圆管落水管的尺寸是由那些因素决定雨水管，是别墅屋面排水

3、系统的组成部分，作用是将屋面天沟内收集的雨水有组织的排离建筑物。其材质有：彩铝无缝雨水管、PVC落水管、铜雨水管等。无缝彩铝雨水管因质量好，性价比优，外形美观，经久耐用被市场广泛采用。克虏斯无缝雨水管采用国际标准尺寸：2X3英寸（51X75mm），3X4(76.2X101mm)英寸矩形雨水管，3英寸(75mm)，4英寸(100mm)圆型雨水管通常2X3英寸的水管可以满足600平方英尺（55平方米）的屋面，3X4英寸的水管可以满足1200平方英尺（110平方米）的屋面4英寸圆管的排水量为3英寸的1.5倍2X3方管的排水量与3英寸的相当。3X4方管的排水量与4英寸的相当金属落水系统有什么优点？第一

4、是美观，提高房屋的档次；第二是色彩丰富，易于和建筑及环境相协调；第三是质量好，产品耐腐蚀，安装牢靠；第四是寿命长；第五是环保，铝合金回收率高可循环使用克虏斯产品的优势是什么，产品特点有那些？第一， 我们是国内最早最知名的金属落水系统生产商,专业生产开发各类金属落水产品；第二， 我们有五年的行业经验和丰富的资源；第三， 我们有专业的开发设计团队和高效制造能力，和高素质的安装队伍。第四， 我们以多种材质，多样风格，系列齐全,色彩丰富,可以满足全方位的需要。第五， 我们以大规模生产安装和个性化设计制造相结合而著称克虏斯品牌的营销模式是什么样的？在经销商利益维护方面有什么具体措施？克虏斯主要采用品牌代

5、理的营销模式，通过区域授权的模式保护经销商利益，一个城市一般只保留一个经销商；还可根据客户要求设立办事处或和经销商合作共建渠道,建立起高效协作的客户服务系统落水系统按什么单位报价?一般天沟和立管按米报价,配件按件报价,也可以把配件综合在天沟和立管里综合报价,但需要户型图或雨排水系统图美国GUTTER和你们什么关系？美国GUTTER公司我们成立初期的合作伙伴，克虏斯金属落水系统产品最基本的技术规范、安装规范及最早的产品引进是美国GUTTER的支持协作的，目前我们所有的产品都是本土化生产克虏斯金属落水系统产品材料是什么？我们的产品材质包括铝合金、铜、钛锌、彩钢、镀锌钢板等多种金属材料，是目前国内唯

6、一拥有多种材质生产安装经验的厂家克虏斯金属落水系统产品都有哪些型号？我们的产品风格有K型、半圆型，双层，前圆后方型等多种，并可根据你的项目定制开发你们产品都有哪些型号？我们的产品尺寸有5寸、6寸、6.5寸、7寸、8寸等全系列产品，并可根据客户的要求定制，是目前国内唯一具有全系列产品生产能力的厂家。各型号天沟规格的具体高度和宽度是多少？我们产品的X英寸是怎么定义的？我们产品的尺寸规范都是按照美国标准,天沟的尺寸规格一般是按照天沟上口的宽度决定的，这也是最重要的尺寸参数，天沟深度及底部宽度等其它尺寸都随着上口宽度按比例变化。如产品规格是K5表明是上口宽度是5英寸，其它以此类同；一英寸等于25.4毫

7、米，K5换算成国标是127毫米，K6是152毫米，K7是180毫米，K8是200毫米（具体尺寸有产品图纸）各型号产品的具体厚度是如何定义的？我们产品的尺寸规范都是按照美国标准,不同的规格厚度不同。一般K5K6R6都是0.7毫米厚，K7是0.8毫米，K8是1.0毫米厚，也可以根据你的要求定制。现执行的安装方法和固定件是否可靠？我们产品的安装规范都是来自美国标准,我们公司在行业内也积累了5年的行业经验,有专业的设计师为你设计天沟规格的选择依据是什么？需要根据屋面汇水、檐口结构及当地降雨量等多种因素，我们可以为你提供产品选型设计阳台地露在落水系统安装过程中怎么样处理才好看？一般可以通过雨水斗或转换头

8、实现，我们有相关的案例图片可以给你参考金属落水系统安装的美观度都体现在那些方面？第一是颜色丰富，易于和建筑及环境相协调；第二是金属质感视觉效果好；第三是简洁大方，和建筑物风格匹配融为一体克虏斯金属落水系统质保年限有多长？标准产品是七到十年质保，工程施工质保期两年，还可根据你们的要求提供更耐久的产品。有保温层时如何安装落水系统？北方的建筑一般都要求外墙保温，根据这种特点我们设计有相应的固定件保证和保温层里面的结构层牢固连接落水系统檐口内壁渗水如何处理？檐口内壁渗水俗称尿檐，设计因素较多，一般和屋面瓦防水差有关，也可能和天沟安装坡度、下水口堵塞、雨水管设置不合理等排水不畅有关，也可能和檐口结构及天

9、沟选型和安装有关金属天沟内有无必要设置批水板？批水板地设置可以有效防止尿檐的发生，但如檐口结构合理有效防止尿檐的情况下可以无需安装金属天沟内有无必要设置挡叶网？挡叶网的设置目的是防止周边环境的树叶落入檐槽，但如周边树木不多时可以不予考虑，在以后的使用中也可另行加装。金属落水系统是如何完成与PVC有效对接的？金属落水系统和PVC的对接一般发生在金属天沟和PVC雨水管的连接、PVC预埋管和金属雨水管的连接，金属雨水管和地下PVC管网的连接，克虏斯根据相应的情况设计开发有多种转接配件以保障连接质量。|金属落水系统和PVC落水系统的优劣势有那些？除过金属落水系统的自身优势外，相较PVC产品的容易变形、

10、老化、色彩单一、规格少等劣势，克虏斯金属落水系统具有牢靠不易变形，耐候性好历久弥新，色彩丰富、规格众多，产品价格根据材质、规格等具有丰富的选择空间和灵活性。金属落水系统的安装复杂吗？金属落水系统的安装简单方便，具备PVC安装经验的稍加培训即可安装。克虏斯落水系统在行业当中处于一个什么样的状态？克虏斯在行业中一直是领导品牌，率先在中国实现本土化生产，率先引入无缝落水管工艺，率先采用静电粉沫喷涂工艺,率先实现多型号多材质及定制化的生产辊涂工艺和静电喷涂工艺在金属落水系统生产中有什么区别？质量或寿命差别不大，差别主要在于涂料成分的产别。静电粉末喷涂是一种环保工艺，可以提供更加丰富的表面装饰效果，目前

11、正在更多的行业及产品上普及。金属落水系统安装须具备什么条件？金属落水系统一般是外架落架前的最后一个环节，需要在屋面瓦安装完毕、墙体装饰材料及檐口、外墙涂料全部施工完成后进行。如何挑选金属落水系统的形状？金属雨落水系统有K型，半圆形，双层K型，前圆后方型，方形主要在厂房等工业项目上使用；市场上通常使用的是K型和半圆形。在国外，美国通常流行K型，欧洲流行半圆型。在国内，美国南加州风格和地中海的房子，使用S形和大的波形瓦的建筑通常选用半圆型落水系统；而一般的平形瓦或小波形瓦选用K型落水系统。如何挑选雨落水系统的尺寸？现在克虏斯在市场供应有5寸、6寸、6.5寸、7寸、8寸等全系列产品，并可根据客户的要

12、求定制，是目前国内唯一具有全系列产品生产能力的厂家。各型号天沟规格的具体高度和宽度是多少？我们产品的X英寸是怎么定义的？我们产品的尺寸规范都是按照美国标准,天沟的尺寸规格一般是按照天沟上口的宽度决定的，这也是最重要的尺寸参数，天沟深度及底部宽度等其它尺寸都随着上口宽度按比例变化。如产品规格是K5表明是上口宽度是5英寸，其它以此类同；一英寸等于25.4毫米，K5换算成国标是127毫米，K6是152毫米，K7是180毫米，K8是200毫米（具体尺寸有产品图纸）在选择尺寸时，主要应注意是檐沟的开口尺寸和高度要和檐口的高度吻合，中国水泥结构住宅檐口都较厚（较国外木结构）所以要选5英寸以上的尺寸；在一些

13、豪华的大别墅（挑檐大，檐口厚），多层和共建会所等建筑，应选择6.5英寸，7英寸的尺寸，保证落水的尺寸和建筑的外观协调。而有些公共建筑和会所的建筑，对檐口的装饰性要求高，可以选择双层型装饰檐沟，它是把檐沟的排水和装饰性整合在一起。肯定的讲，尺寸越小，价格应越低。金属落水系统的安装主要问题-档叶网是否需求？如何选用？挡叶网非常需要，别墅区的树木在2年内就会大大高于别墅的屋面，会有大量落叶影响屋面排水。挡叶网的质量非常重要：首先，铝网需要做氧化处理（氧化后的表面是淡黄色），否则迅速会被腐蚀，失去作用；其次是厚度，尤其是边的强度，否则，挡叶网形如虚设。第三，挡叶网需在檐沟全长度铺设，在落水口局部铺设不

14、可以。我们的别墅的腰线较小，但我不希望穿墙式安装，请问如何安装较美观？有两种情况：如果腰线突出墙面的距离小于6厘米，可采用2个5cm S型弯头连接绕过腰线；如果腰线突出墙面的距离小于12厘米，可采用2个10cm S型弯头连接绕过腰线；如果腰线突出墙面的距离大于12厘米，可采用4个弯头插接来绕过腰线来满足不穿墙式的安装要求。为什么我们安装的金属落水系统安装效果不好？可能有以下几种原因：最常见的原因是没有严格按照标准执行安装。落水安装时必须弹安装线，保证檐沟和落水管的横平竖直，否则会影响美观；其次，安装细节注意不够也会影响安装效果。比如材料裁切尺寸的精确度，裁切材料时要保证切口毛茬转向檐沟内侧，这

15、样接缝会较美观。在连接时要确保接缝严密后再铆接，拉铆钉时要用调配漆涂上与檐沟同样的颜色等等；第三、布管的位置不合适，与立面不够协调统一，也会影响建筑立面效果；第四、腰线等细节处理不够。落水系统的综合对比彩铝落水系统PVC落水系统 水泥檐沟 色彩色彩丰富，和建筑物色彩搭配自然协调，色彩鲜艳，历久如新颜色单一，无美观K型，半圆型等多种式样，造型美观，彰显不同建筑风格造型单一无使用寿命710年25年雨水冲刷，房屋老化快抗冲击性强度高，无缝落水管质量更好,性价比更高，绝无漏水变形之忧易老化脆裂、变形长年累月会有裂缝耐候性彩铝在自然环境中会形成氧化保护膜，抗氧化、抗腐蚀，带来卓越的耐候性风吹雨淋日晒下容

16、易变色因雨水产生黑班施工轻便，强度好，安装便捷简单施工复杂，造价昂贵维护低维护，绿色环保，可回收利用，符合国家对绿色建筑的要求低维护，不可回收利用维修困难，成本高昂价格性价比高一般差如何挑选金属雨落水？选择金属雨落水产品时可以参考美国建筑制造商协会的AAMA1405关于铝质雨落水产品的标准。大体来看，首先要注意选择那些基材为铝锰合金（3003系）的防锈铝的金属落水产品；正规的落水产品供货商能够提供基材的材质检测报告，避免选择基材使用回收铝，纯铝或6系铝的金属落水产品。其次要考虑金属落水产品的表面涂层，涂层要达到或通过附着力，耐酸碱，耐冲击，耐溶剂，300小时耐老化等测试的要求。第三要注意金属落

17、水产品的附件，尤其是吊件是否做过氧化耐老化处理，提供的安装钉子是否是渗碳钢钉。这两个附件的强度和耐久性是雨落水系统安全使用的关键配件。国外主流的雨落水系统产品主要包括哪些材质？主要有铜，钛锌板，彩铝，镀锌板，PVC等。铜造价高，但在意大利大量使用；钛锌板造价也比较高，在德国，法国也有大量使用；镀锌板在一些干旱的地区（如美国洛杉矶等）地区有一些使用，价格低；彩铝材质在全世界都有广泛使用。PVC材质的产品应用范围很小。如何选择建筑的金属落水系统的颜色？有可能，建议您咨询建筑设计师。一般来说，彩铝雨落水系统的颜色可以选择和建筑的檐口，窗框等颜色色系一致，但比檐口，窗套线颜色深一些的颜色。美国GUTT

18、ER的FAQHow are your products shipped?All of our gutters and downspouts are shipped in specially made crates to prevent damage. Our shipping methods have been extensively tested to ensure your product arrives at its destination damage free. We ship via Common Carrier or UPS and can accommodate next da

19、y and 2nd day air shipments.back to topWhere are you located?We are located approximately 30 miles north of Chicago.back to topWhat is the purpose of gutter and downspout systems?The purpose of gutter and downspout systems is to collect rainwater from the roof and direct it away from the building fo

20、undation by means of downspout extensions, splash blocks, or underground drain lines.How much do you overlap the gutter when using a box miter?It is recommended that you overlap anywhere between 2 and 5 inches.back to topWhat if the gutter and downspout system functions improperly?An improperly func

21、tioning gutter and leader system can contribute to water and ice backing up against fascias and under roof shingles, can damage soffits, and can discolor or deteriorate siding materials. Faulty gutters and leaders can also lead to soil erosion adjacent to buildings and serious water and foundation d

22、isplacement problems in basements and crawl spaces. Other signs of a faulty system are rotted wood, cracked and blistering paint, worn mortar joints, and settling cracks in patios, walkways and driveways.back to topHow should a gutter be pitched?Gutters should be sloped a minimum of 1 inch for every

23、 40 feet of run. Standing water may indicate a sagging or incorrectly pitched gutter.back to topHow do I maintain a free flowing gutter system?Remove leaves, acorns, sticks and other debris from gutters, so melting snow and ice can flow freely. This can prevent ice damming - a condition where water

24、is unable to properly drain through the gutters and instead seeps into the house causing water to drip from the ceiling and walls. You may also consider installing gutter screens. Screens prevent debris from entering the gutter. When cleaning your gutters, make sure to “flush out” the downspouts wit

25、h a hose to ensure there are no obstructions inside the downspout.back to topDo you recommend contractors in my area?RainTrade does not specifically recommend contractors in your area, however we do recommend visiting the CDAs (Copper Developmental Association) website atwww.copper.org. The CDA has

26、compiled a list of the best architectural copper contractors in the US and Canada into an interactive database. To retrieve a list of contractors for your particular location pleaseclick here.back to topHow are gutters sized?Gutters are often sized according to the roof area they drain. 5 K-style gu

27、tters are the residential industrys standard. 6 K-style gutters are used for larger roofs. Half Round gutters are typically sized 1 inch wider than K-style to provide the equivalent capacity.Wider gutters may be required for certain hard surface roofing materials, such as slate and tile, or used on

28、steeply-pitched roofs, to prevent water from shooting over the gutter. Gutters should be positioned tight against roofing materials and the fascia.back to topHow do you determine the size of Downspout to use?Downspout diameters are sized according to the roof area they drain. A rule of thumb used in

29、 the industry is that a 2x3 inch downspout will suffice for a 600 sq. ft. of roof, a 3x4 inch downspout for 1,200 sq. ft. of roof, and 4x5 inch downspout for 2000 sq. ft. of roof. The typical downspout size for a 5” K-style gutter is 2x3 inches, but 3x4 inches is preferable because it is less likely

30、 to become clogged and is easier to clean out.back to topWhat are the advantages and disadvantages of the various metals you offer for your Gutter Systems?AluminumAdvantage: Low cost, and relatively easily maintained. Available in 20 colors. Easily installed. Limited 20 year warranty on baked on ena

31、mel coating.Disadvantage: Expands twice as much as steel and 50 percent more than copper. Less strong than steel or copper. Can be dented (especially in lighter thickness such as .027) more easily than other gutter materials.Galvanized SteelAdvantage: Galvanized Steel is stronger than aluminum at eq

32、uivalent thickness and contracts one-half as much. Steel is popular in Northern states with snow and ice conditions.Disadvantage: Galvanized Steel will rust over time. Galvanized finishes are rarely cleaned or primed properly and when field painted, the paint can fail prematurely. Hot-dipped galvani

33、zed gutters are preferred over other galvanized finishes, but are not recommended for nautical environments unless the coil has been pre-coated.CopperAdvantage: Considered a quality, premium product. An appropriate material for historic preservation projects. Copper patina (See Copper Patina below)

34、blends well with many roofing products. Low maintenance, does not require paint. Will not rust and is well suited for nautical environments. The most durable and longest lasting material currently available for gutters.Disadvantage: More costly than alternative materials. Requires skilled installers

35、 for cutting and soldering of joints and transitions.Lead Coated CopperAdvantage: Provides an alternative color to architectural copper applications. In addition, lead-coated copper runoff fulfills the objective of providing a metal whose runoff staining is compatible with light-colored materials su

36、ch as masonry, limestone, stucco and light painted woodwork. Can be painted more effectively than copper.Disadvantage: More costly than alternative materials. Requires skilled installers for cutting and soldering of joints and transitions.back to topWhat is (Copper) Patina?Typically allowed to weath

37、er naturally, copper develops a blue-green coloration resulting from the formation of a protective copper oxide patina. During the initial weeks of exposure, particularly in a humid atmosphere or in areas of frequent rainfall, radical color changes often take place with iridescent pinks, oranges and

38、 reds interspersed with brassy yellows, blues, greens and purples. During continued exposure, these interference colors fade and are replaced by relatively uniform russet brown shades referred to as statuary or oxidized finishes. In industrial and nautical atmospheres, the natural patina generally f

39、orms in approximately five to seven years. In rural atmospheres, where the quantity of air-born sulfur dioxide is relatively low, patina formation may not reach a dominant stage for 10 to 14 years. In arid environments, the basic sulfate patina may never form due to the lack of sufficient moisture.

40、Similarly, exposed horizontal surfaces develop the patina more rapidly than sloping surfaces which, in turn, patinate more rapidly than vertical surfaces. The critical variable, in all instances, is the dwell time of moisture on the exposed surfaces.The progressive oxide, sulfide and sulfate films w

41、hich develop on copper exposed to the atmosphere are quite thin, two to three thousandths of an inch and highly adherent, but with relatively low abrasion resistance. Neither the oxide nor sulfide films are particularly corrosion resistant. The sulfate patina, on the other hand, is highly resistant

42、to all forms of atmospheric corrosion, once it has had an opportunity to form completely. It thus significantly increases the durability and, hence, the service life of copper roofing and flashing.The natural weathering cycle of copper is illustrated by the 12 sequential color plates in theWeatherin

43、g Chartbelow.Unexposed4 Months8 Months1 Year2 Years3 Years4 Years5 Years7 Years10 Years15 Years25-30 Yearsproperty ofwww.copper.orgback to topCan the naturally occurring green patina of copper be accelerated by artificial chemicals?Due to the precise temperature, humidity and chemical requirements,

44、it is generally not recommended that copper be artificially patinated in the field. However, there are field applied prepatination systems that, with proper training, have proven successful. The patina is produced using patented chemical processes that result in patina chemical conversion coatings t

45、hat carry extensive warranties.back to topHow can the original copper color be protected from weathering after installation?There is no permanent protection system that will protect copper from weathering. There are clear coatings that will provide short-term protection for exterior applications and

46、 longer-term protection for interior applications.back to topWhat is the role of solder in a copper system?In roof and wall systems where water-tight seams are required, soldering is specified. A soldered seam will join two pieces of copper or steel into a cohesive, watertight unit that will expand

47、and contract as one piece. Well soldered seams are, in many cases, stronger than the original base material and will provide many years of satisfactory service.back to topWhat is Lead Coated Copper?Lead-coated copper is copper in sheet or strip form coated on both sides with lead. The lead coating i

48、s applied to the copper by hot dipping the sheet or strip in a bath of molten lead.back to topWhy was Lead Coated Copper developed?Lead coated copper was developed and gained widespread use between the turn of the century and World War I. Its development was spurred by two principal desires: to prov

49、ide a metal for roofing and flashing with the appearance and corrosion resistance of lead at a lower cost and with significantly less dead weight; and to provide a roofing and flashing material whose runoff stains would be compatible with light painted woodwork and light colored masonry, particularl

50、y the more porous materials including limestone, mortar and concrete. Lead coated copper fulfills the first objective and very nearly satisfies the second. The stains produced range from light to dark gray in color and resemble the natural atmospheric weathering of the masonry or paint.back to topWh

51、at is the purpose of the lead in Lead Coated copper?Lead coated copper is the copper industrys response for a strong, durable, easy-to-install gray metal finish on a copper substrate. The material has been available since the early 1900s.Lead coated copper does not extend the life of copper. Its pur

52、pose is to provide an alternative color to architectural copper applications. In addition, lead coated copper runoff fulfills the objective of providing a metal whose runoff staining is compatible with light-colored materials such as masonry, limestone, stucco and light painted woodwork.back to topC

53、an you paint Lead Coated Copper?Lead coated copper takes paint readily and holds it well. In fact, the durability of properly applied paint is usually enhanced by the lead coating, provided that the paint selected is suitable for the purpose.back to topWill Lead Coated Copper Patina?Lead Coated Copp

54、er will not patina like regular copper. When permitted to weather naturally, lead-coated copper gradually darkens to a soft gray color.back to topWhat is galvanic corrosion and how can it be prevented?Metals are rated according to their nobility ratings. When dissimilar metals are in contact with ea

55、ch other in the presence of oxygen and moisture, the more noble metal will corrode the less noble. Copper is one of the most noble of metals and must be separated from other less noble metals. Contact between dissimilar metals should always be avoided. If contact cannot be avoided, the adjacent surf

56、aces should be painted with bituminous or zinc chromate primers or paints. Taping or gasketing with non-absorptive materials is also effective.Care should be taken to prevent the wash from copper surfaces onto adjacent, exposed less noble metal surfaces, since the traces of copper salts carried in t

57、he wash can accelerate the corrosion of less noble metals.back to topWhy would I choose a Half Round Gutter System?Half-round gutters were the traditional gutter style on homes built before 1950 and remain a popular choice on historic renovation projects, traditional renovations, and new upscale cus

58、tom housing.The simple lines of half-round gutters compliment heavily textured materials such as slate, shakes, and tiles. Where crown moldings exist in lieu of fascias, half-round gutters can be easily hung from the roof. Where fascia exist, fascia brackets may also be used.back to topWhat are the

59、advantages and disadvantages of Half Round Gutters?Advantages: Appropriate for both historic restoration and new construction, both contemporary and traditional. Attractive and durable.Disadvantages: Higher initial material and labor cost than some other gutter products. Not generally used on non-cu

60、stom housing.1. Snap layout linesMark the highest point of the gutter run on the fascia 1 inches below the metal drip-edge flashing (on the extra-wide fascia shown here, the gutter is lower down). At the other end of the fascia (or at the downspout location if theres one in the middle of the run), m

61、ark the low end of the gutter run, keeping in mind that the slope should be approximately inch for every 10 feet of run.Snap a chalk line between the two points (as shown). Tip: Check the fascia for rot and make repairs if necessary before installing the gutters.2. Attach fascia bracketsLocate the r

62、after tails behind the fascia; theyre typically spaced 16 inches on center (look for telltale nail heads).Make a mark at the chalk line on every other rafter tail.Bore a -inch-diameter pilot hole through the fascia and into the rafter tail at each mark.Fasten fascia brackets with -inch stainless ste

63、el lag screws long enough to penetrate rafters 2 inches (as shown).Tip: Rub soap on the lag screws so theyll be easier to drive through fascia and into rafter tails.3. Saw gutter to lengthCut gutter section to length with hacksaw and aviation snips, or with a 12-inch power miter saw fitted with a carbide-tipped finish blade (as shown).If the gutter continues around a corner, cut the appropriate angle (typically 45 degrees) on that end.If the run requires two sections of gutter, overlap them by 8 inches and use 3/8-inch-lon