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Fence Calculator

フェンス染色計算ツール

1回、2回、3回塗りで延長の両面を覆うのに必要な染色の量を、ガロン数と5ガロン缶の数で求めます。

必要な塗り液の量

寸法を入力すると、入力に合わせて結果が更新されます。

概要

染剤はガロン単位で購入し、測った平方フィートを覆うものです。フェンスは両面が染まるので面積が2倍になります。この計算ツールは延長の両面を合算し、計画する塗り回数を掛け、そしてガロンに、ご自身の商品の1ガロンごとの塗布面積を使って5ガロン缶の数まで求めます。

散布面積はデッキ用とフェンス用では一般に1ガロンあたり150から250平方フィートなので、高さと塗り回数を考えると散布面積の指定のほうが延長さより効いてきます。100フィートに6フィート、2回塗り、1ガロンあたり250平方フィートなら約9.6ガロン、つまり5ガロン缶2缶になります。

前提条件

  • The stain area is the fence footprint on both sides: length times height times 2.
  • Gallons required are the both-sides area times the coat count, divided by the rated coverage per gallon.
  • Buckets are 5 gallon pails, rounded up to a whole number.

よくある間違い

  • 計算の中で1面だけを塗り、所要量の半分の染剤を買うこと。
  • 塗り回数を無視すること。実際の吸収と色の深みは2回目の塗りでほぼ決まります。
  • 箱の塗布面積の数値を無加工のシダーに当てること。

詳細なガイド

購入ガイド

Stain coverage math is simple once the fence is measured correctly, and the part people get wrong is treating a fence like a wall with one face. Every linear foot of run has two sides exposed to weather, so the area that needs coating is length times height times two, not length times height. This fence stain calculator keyword works from that both sides figure and your product's rated coverage per gallon to land on a gallon count and a five gallon bucket count, the same two numbers a paint store clerk needs to ring up the order. Staining is one line in a larger ownership cost, and pairing the gallons here with labor or a contractor's day rate in the fence cost calculator gives a fuller picture of what keeping a wood fence finished actually costs over its life, which sits alongside every other cost tool under the cost calculators hub. Skipping this step and eyeballing a quantity at the store is how homeowners end up back in the aisle for a second can mid coat.

Not every fence needs this math in the same way. A full privacy fence with tall, wide boards has more square footage per linear foot than a shorter picket style, so pulling the actual board height and style from the wood fence calculator or the privacy fence calculator before estimating stain keeps the area honest instead of guessing at an average height. Picket style fences add a wrinkle of their own: gaps between boards mean less painted surface per foot than solid privacy panels, but more edges and end grain, which is exactly the kind of wood that drinks stain fastest. The fence picket calculator and picket fence calculator both size the board count and spacing for that style, and that board count is a reasonable cross check against the square footage this calculator produces if the numbers feel off. Running both tools side by side on the same project catches a mismeasured height before a gallon has been bought.

Coverage ratings printed on a stain can are a lab number, measured on a smooth, uniform test panel, and real fence lumber rarely matches that panel. Rough sawn cedar, weathered pine and anything with heavy end grain exposed at board tops will pull more stain per square foot than the rated figure, so treating the can's number as a ceiling rather than a guarantee avoids a second trip to the store mid project. Coat count matters just as much as the rating: a single coat seals the wood but a second coat is where even color and real film build come from, which is why two coats is the standard assumption here and in most manufacturer instructions. Skipping the second coat to save a bucket is the most common way homeowners end up redoing the job sooner than planned, since thin, uneven coverage weathers out fast on the sun facing side of the run. A third coat on the sun exposed face only, rather than the whole fence, is a reasonable middle ground when the budget is tight but the south side clearly takes the worst of the weather.

Staining is usually a maintenance task on an existing fence, but it is worth planning for at build time too, since a fence stained before the first hard winter holds up better than one left raw for a season. If the fence itself has not gone up yet, the wood privacy fence installation guide covers the build sequence that the stain job follows, and the related wood fence cost guide is useful for budgeting the stain alongside the lumber and labor in the same pass rather than as an afterthought once the fence is already standing and the budget has already been spent elsewhere. New, kiln dried lumber also tends to accept stain more evenly than lumber that has already weathered a season outdoors, which is one more reason to plan the first coat early rather than waiting a year.

Stain is not the only finish option, and the choice between stain and paint changes both the coverage math and the recoat schedule: paint typically covers in fewer coats but shows wear differently as it ages, chipping and peeling instead of fading, and the staining versus painting comparison lays out that tradeoff before a gallon is bought. Whichever finish is chosen, it sits on a recurring schedule rather than a one time cost, and the fence maintenance guide covers how often a given wood species and climate actually need a fresh coat. For background on how different fence materials age and whether staining even applies to the material already in the yard, the fence materials guide is the broader reference this calculator assumes, and it is worth a read before assuming every fence material needs this kind of recurring upkeep at all.

よくある質問

100フィートに6フィートのフェンスには染色がどのくらい必要ですか。

100に6フィートの両面は1,200平方フィートです。2回塗りで1ガロンあたり250平方フィートの数値なら、塗布面積は2,400平方フィートとなり9.6ガロン、つまり5ガロン缶2缶です。未加工のシダーや3回塗りなら、そこから数は増えます。

フェンス染色の計算式は何ですか。

長さと高さを掛け、両面分であるために2倍し、塗り回数を掛け、ご自身の材料の1ガロンあたりの平方フィートの塗布面積で割ります。購入量はガロン整数に切り上げ、さらに5ガロン缶の整数に切り上げます。

なぜフェンスは両面分を測る必要があるのですか。

両面が天候にさらされ、両面とも染剤を吸うからです。常に湿気や地面の跳ね水に触れている裏側も例外ではありません。2面を省くのは、染剤の量を違える原因として最も多いものです。

1ガロンあたりの塗布面積はどれくらいを想定すべきですか。

デッキ用とフェンス用の染剤の数値は、木の多孔性や製品の種類によって、一般に1ガロンあたり150から250平方フィートです。まず製品の公称数値から始め、未加工のシダーなど吸う木材では低めの側に寄せます。

1回塗りで十分ですか。

初回の処理では通常は足りません。1回目は木に定着し、2回目が均一な色と膜をつくります。だからこそ2回塗りが一般的な計画で、この計算ツールの既定の塗り回数もその値です。

染剤は5ガロン缶で買うべきですか。

1ガロンあたりでは最も安い傾向にありますが、缶の中身をほどなく使い切る必要があります。染剤は放置すると表面に膜を張ります。計算ツールは缶の数を返すので、5ガロン単位の値引きと作業量とを比べてください。

フェンスの染色はいくらかかりますか。

資材はガロン数にご自身の染剤の単価をかけたものです。作業費は依頼するなら素地作りと塗りに要する時間です。まずこの計算ツールでガロン数を求め、1ガロンあたりの単価と地元の作業費の率を当てれば、計画に合った費用になります。

なぜ未加工のシダーには表示値より多くの染剤が必要のですか。

新しく乾燥したシダーはよく吸います。1回目は表面に溜め込まずに木口や加工面へ吸い込みます。そのため実際の塗布面積は製造元の実験室の数値より下回ります。表示値どおりに発注し、1回目が乾いたあとにタッチアップ用に1クオート以上を残してください。